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Vforum.vn Trang chủ - Diễn đàn Tin học Công nghệ - Vforum.vn

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Online Status
Online

Server IP address resolved: Yes
Http response code: 200
Response time: 1.71 sec.
Last Checked: 08/07/2019

Vforum.vn receives about sixty thousand unique visitors and seventy thousand pageviews per day. The estimated value of vforum.vn is one million USD. Each unique visitor makes about 1.29 pageviews on average.

Over the time vforum.vn has been ranked as high as 6,588 in the world, while most of its traffic comes from Viet Nam, where it reached as high as 62 position.

It’s good for vforum.vn that their server is also located in Viet Nam, as that enables the majority of their visitors to benefit from a much faster page load time.

At the time of the last check (July 05, 2019) vforum.vn has a self-signed SSL certificate.

According to Google Safe Browsing, Google Safe Search, Symantec and Web of Trust vforum.vn is quite a safe domain.

Mobile-Friendly test indicates that vforum.vn is well optimized for mobile and tablet devices, however website page loading time could be improved.

Global Rank
9,379
Average Load Time
1.14sec
Links In Count
783
Website Value
$972,360
Overview
Last Updated: 08/23/2019
Overall result - "vforum.vn" is SAFE.
We gather website safety and reputation data and compare it with available third-party sources so we calculate own safety and trustworthiness rate based on information that we get.
Norton Connect Safe
Last Updated: 01/12/2019
NCS "vforum.vn" OK.

Norton ConnectSafe evaluates vforum.vn for any unsafe and insecure content. The results are critical for families with young children.

Google Safe Search
Last Updated: 10/11/2016
GSS "vforum.vn" OK.

SafeSearch is used as a parental control tool to filter out any inappropriate for your children search results on your devices: phones, tablets or personal computers.

Google Safe Browsing
Last Updated: 01/09/2019
Malware not found at "vforum.vn".
"vforum.vn" is not a phishing page.
"vforum.vn" does not install unwanted software.
"vforum.vn" does not contain harmfull applications.
Google Safe Browsing notifies when websites are compromised by malicious actors. These protections work across Google products and provide a safer online experience.
Site Advisor
Last Updated: 01/09/2019
SA "vforum.vn" OK.

McAfee assesses vforum.vn for a meaningful set of security threats. Featured dangers from annoying pop-ups to hidden Trojans, that can steal your identity, will be revealed. McAfee does not analyze vforum.vn for mature or inappropriate content, only security checks are evaluated.

Web of Trust
Last Updated: 01/09/2019
WOT "vforum.vn" VERY GOOD.

The WOT calculates reputation of the vforum.vn. This reputation system receives ratings from users and information from third-party sources, assesses the vforum.vn for safety features and confirms, whether vforum.vn is suitable for children.

SSL Information
Domain localhost
Issuer localhost
Algorithm RSA-SHA1
Valid form 12/02/2017
Expiration 04/18/2045
Signed Certificate is self signed
Additional Domains
Server Location
Ho Chi Minh City
Ho Chi Minh
Viet Nam
ASN Information

ASN ID: 7643
ASN Title: VNPT-AS-VN Vietnam Posts and Telecommunications (VNPT), VN

Last Update: 05/30/2019

% [whois.apnic.net]
% Whois data copyright terms http://www.apnic.net/db/dbcopyright.html

% Information related to 'AS7467 - AS7722'

as-block: AS7467 - AS7722
descr: APNIC ASN block
remarks: These AS numbers are further assigned by APNIC
remarks: to APNIC members and end-users in the APNIC region
admin-c: HM20-AP
tech-c: HM20-AP
mnt-by: APNIC-HM
mnt-lower: APNIC-HM
last-modified: 2008-09-04T06:40:26Z
source: APNIC

role: APNIC Hostmaster
address: 6 Cordelia Street
address: South Brisbane
address: QLD 4101
country: AU
phone: +61 7 3858 3100
fax-no: +61 7 3858 3199
e-mail: helpdesk@apnic.net
admin-c: AMS11-AP
tech-c: AH256-AP
nic-hdl: HM20-AP
remarks: Administrator for APNIC
notify: hostmaster@apnic.net
mnt-by: MAINT-APNIC-AP
last-modified: 2013-10-23T04:06:51Z
source: APNIC

% Information related to 'AS7643'

% Abuse contact for 'AS7643' is 'hm-changed@vnnic.vn'

aut-num: AS7643
as-name: VNPT-AS-VN
descr: Vietnam Posts and Telecommunications (VNPT)
descr: VNPT-VN
descr: No 57, Huynh Thuc Khang street, Lang Ha ward, Dong Da district, Ha Noi city
country: VN
import: from AS5511 action pref = 10; accept ANY
import: from AS7473 action pref = 10; accept ANY
import: from AS4637 action pref = 10; accept ANY
import: from AS6453 action pref = 10; accept ANY
import: from AS2516 action pref = 10; accept AS2516
import: from AS4766 action pref = 10; accept AS4766
export: to AS5511 announce AS7643
export: to AS7473 announce AS7643
export: to AS4637 announce AS7643
export: to AS6453 announce AS7643
export: to AS2516 announce AS7643
export: to AS4766 announce AS7643
admin-c: PTH13-AP
tech-c: PTH13-AP
notify: hm-changed@vnnic.net.vn
mnt-by: MAINT-VN-VNNIC
mnt-irt: IRT-VNNIC-AP
mnt-lower: MAINT-VN-VNPT
mnt-routes: MAINT-VN-VNPT
remarks: For admin contact mail to Pham Tien Huy
remarks: For Tech contact mail to Pham Tien Huy
last-modified: 2018-01-25T04:03:48Z
source: APNIC

irt: IRT-VNNIC-AP
address: Ha Noi, VietNam
phone: +84-24-35564944
fax-no: +84-24-37821462
e-mail: hm-changed@vnnic.vn
abuse-mailbox: hm-changed@vnnic.vn
admin-c: NTTT1-AP
tech-c: NTTT1-AP
auth: # Filtered
mnt-by: MAINT-VN-VNNIC
last-modified: 2017-11-08T09:40:06Z
source: APNIC

person: Pham Tien Huy
address: VNPT-VN
country: VN
phone: +84-24-37741604
e-mail: huypt@vnpt.vn
nic-hdl: PTH13-AP
mnt-by: MAINT-VN-VNPT
last-modified: 2017-11-19T07:06:20Z
source: APNIC

% This query was served by the APNIC Whois Service version 1.88.15-46 (WHOIS-US3)

HTML Metatags
Title
Trang chủ - Diễn đàn Tin học Công nghệ - Vforum.vn
The title has an optimal length. Search engines typically displays the first 50–70 characters of a title tag. If you keep your titles under 70 characters, our research suggests that you can expect about 90% of your titles to display properly.
Description
The description is too short. If a description is too short, the search engines may add text found elsewhere on the page. Note that search engines may show a different description from the one you have authored if they feel it may be more relevant to a user's search.
Encoding
UTF-8
You should always specify the encoding used for an HTML page. If you don't, you risk that characters in your content are incorrectly interpreted. This is not just an issue of human readability, increasingly machines need to understand your data too.
Language
Incorrect Language
Identifying the language of your content allows you to automatically do a number of things, from changing the look and behavior of a page, to assisting search engines in extracting information. If part of the page uses text in a different language, you can add a language attribute with a different value to the element that surrounds that content.
Language Region
Not Found
Images
Attribute ALT
Success, no any <img> without defined ALT attribute. Alt text is helpful to end users if they have images disabled or if the image does not properly load.
As a general rule, search engines do not interpret the content of image files. The text provided in the <img alt> attribute enables the site owner to provide relevant information to the search engine and to the end user.
H1-H6 Tags Information

For search engines, <H> tags helps understand the structure of the text on a page better. For users, headings are like anchors in a wall of text, navigating them through the page and making it easier to digest. The <h1> tag reinforces the core keyword(s) found in the <title>, <description>, and the <body>. We recommend that the <h1> tag includes keywords that reflect the contents of the page and that it is not longer than 150 characters in length, but don’t overuse the tags and the keywords in them. Keep it readable for users.

H1
1 H1 tag(s).
Your H1 introduces the topic your page is all about, just as a title tells a reader what a book is all about.
H2
The H2s are akin to book chapters, describing the main topics you’ll cover in sections of the article.
H3
12 H3 tag(s).
Subsequent headers, H3s to H6s, serve as additional sub-headings within each section, just as a book chapter may be split up by multiple sub-topics.
H4
3 H4 tag(s).
H5
H6
Iframes Information
iFrame
iFrames not found.
Since search engines consider the content in iframes to belong to another website, the best you can hope for is no effect on SEO. Iframes tend to neither help nor hurt your search engine ranking. For this reason, it’s best to refrain from using iframes on main pages that you want to rank high in search engine results. Instead, fill high-priority pages with useful, unique content and save iframes for other pages.
Code To Text Ratio
Code To Text Ratio
9.45 %
A good code to text ratio is anywhere from 25 to 70 percent. This percentage refers to the visible text ratio, as opposed to HTML elements, image tags and other non-visible information. This has become especially apparent since search engines, such as Google, released the Panda update which placed importance on content-driven sites.
Favicons

Favicons are the little piece of graphic that represents your brand on browser tabs, bookmark lists, search history, search ads and even search results. These files are placed in a file called favicon.ico and placed in the root directory of a website. There are no direct SEO effects of having favicons. However, there may be indirect benefits such as increased usability of site and bookmarks. It makes your website look more professional and help a users to remember your site while browsing through multiple URLs. If you want to get mentioned benefits you have to specify icons for different web browsers and sometimes even for different mobiles.

Default Favicon
Backup icon for most desktop browsers (if no icon of the right size is found). Tag format <link rel="shortcut icon" href="path-to-16x16-icon.ico" type="image/x-icon" />
16x16 Optional Favicon
Standard icon for outdated browsers or small resolution hand held devices. Tag format <link rel="icon" type="image/png" sizes="16x16" href="path-to-16x16.png">
32x32 Optional Favicon
Standard for most desktop browsers. Tag format <link rel="icon" sizes="32x32" href="path-to-32x32.png">
96x96 Optional Favicon
Mostly used as GoogleTV icon. Tag format <link rel="icon" type="image/png" sizes="96x96" href="path-to-96x96.png">
Default Apple Icon
Backup icon for apple devices (if no icon of the right size is found). Preferrable size 60x60. Tag format <link rel="apple-touch-icon" sizes="72x72" href="path-to-small-icon.png">
180x180 Apple Icon
iPhone 6 plus icons. Tag format <link rel="apple-touch-icon" sizes="180x180" href="path-to-180x180.png">
152x152 Apple Icon
iPad, iPad mini icons. Tag format <link rel="apple-touch-icon" sizes="152x152" href="path-to-icon-152x152.png">
167x167 Apple Icon
iPad Pro icon. Tag format <link rel="apple-touch-icon" sizes="167x167" href="path-to-167x167.png">
Robots.txt Information

Robots.txt is a text file that website owners can create to tell search engine bots how to crawl and index pages on their site.

Robots File
Robots File Loaded successfully (/robots.txt)
You can have multiple lines of instructions to allow or disallow specific URLs and add multiple sitemaps. If you do not disallow a URL, then search engine bots assume that they are allowed to crawl it.
Disallow
3 record(s)
Other User-Agent
Not found
Default User-Agent
1 record(s)
Sitemap

A sitemap is an XML file where is provided information about each URL: when it was last updated, how often it changes, and how important it is in relation to other URLs in the site. Search engines crawling bots read this file to more efficiently and intelligently crawl your site and to find URLs that may be isolated from rest of the site's content.

Default Sitemap
Sitemap File failed Loaded (/sitemap.xml)
Your site will benefit from having a sitemap.
WHOIS

vforum.vn domain is not supported

DNS Records
HostA RecordTTL
vforum.vn222.255.236.5014400
HostMX RecordPriorityTTL
vforum.vnvforum.vn014400
HostNS RecordTTL
vforum.vndns4.vina-host.com86400
vforum.vndns3.vina-host.com86400
HostTXT RecordTTL

dns3.vina-host.com
TTL: 86400
Email address: root.dns3.vina-host.vn
Serial: 2016102404
Refresh: 86400
Retry: 7200
Expire: 3600000
Minimum: 86400

Errors
Line: 1 Column: 1 - 121
"...<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html..."
Line: 2 Column: 122 - 63
"...onal.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="vn"> <head..."
Line: 142 Column: 7 - 48
"... <a href="javascript://" class="popupctrl">Tiện Í..."
Line: 1308 Column: 9 - 50
"... <span><a href="javascript://" class="popupctrl">Trang ..."
Line: 1312 Column: 26 - 81
"...selected"><a href="javascript://" title="Showing results 1 to 10">1</a><..."
Line: 156 Column: 1 - 8
"...l> </div> <center> </ce..."
Line: 176 Column: 1 - 8
"...></div> <center> <scri..."
Line: 293 Column: 3 - 10
"...store"> <center> ..."
Line: 396 Column: 3 - 10
"...store"> <center> ..."
Line: 512 Column: 3 - 10
"...store"> <center> ..."
Line: 621 Column: 3 - 10
"...store"> <center> ..."
Line: 730 Column: 3 - 10
"...store"> <center> ..."
Line: 835 Column: 3 - 10
"...store"> <center> ..."
Line: 940 Column: 3 - 10
"...store"> <center> ..."
Line: 1048 Column: 3 - 10
"...store"> <center> ..."
Line: 1153 Column: 3 - 10
"...store"> <center> ..."
Line: 1258 Column: 3 - 10
"...store"> <center> ..."
Line: 1438 Column: 1 - 8
"... </div> <center> <scri..."
Line: 236 Column: 143 - 161
"..."><strong><font color="Blue"><b>Bin..."
Line: 339 Column: 143 - 161
"..."><strong><font color="Blue"><b..."
Line: 455 Column: 143 - 161
"..."><strong><font color="Blue"><b>Bin..."
Line: 564 Column: 143 - 161
"..."><strong><font color="Blue"><b>Bin..."
Line: 630 Column: 4 - 25
"...iner"> <font color="#141414"><span ..."
Line: 630 Column: 305 - 326
"...an></font><font color="#141414"><span ..."
Line: 632 Column: 34 - 55
"... center;"><font color="#141414"><span ..."
Line: 634 Column: 1 - 22
"...iv><br /> <font color="#141414"><span ..."
Line: 673 Column: 143 - 161
"..."><strong><font color="Blue"><b>Bin..."
Line: 778 Column: 141 - 159
"..."><strong><font color="Blue"><b>KiM..."
Line: 844 Column: 4 - 25
"...iner"> <font color="#000000"><span ..."
Line: 844 Column: 248 - 269
"...an></font><font color="#000000"><span ..."
Line: 883 Column: 143 - 161
"..."><strong><font color="Blue"><b>Bin..."
Line: 951 Column: 34 - 55
"... center;"><font color="#0000cd"><br />..."
Line: 952 Column: 8 - 29
".../> </font><font color="#0000cd">Dẫu ch..."

3 items are hidden.
Full results are available for registered users only.
Line: 1488 Column: 29 - 32
"...]gmail.com</p> <p>Po..."
Warnings
Line: 93 Column: 150 - 153
"...Công nghệ</a></li >..."
Line: 1496 Column: 5 - 14
"...tic"> <h4>Diễn Đàn</h4> ..."
Line: 1498 Column: 80 - 87
"...-Tin-Hoc">Tin Học</a></..."
Line: 1499 Column: 94 - 97
"...Công Nghệ</a></li> ..."
Line: 1500 Column: 80 - 91
"...-Di-Dong">Điện Thoại</a></..."
Line: 1501 Column: 73 - 81
"...-hoc-tap">Học Tập</a></..."
Line: 1502 Column: 79 - 88
"...Thu-Gian">Giải Trí</a></..."
Line: 1503 Column: 81 - 91
"...uoc-song">Kiến Thức</a></..."
Line: 1508 Column: 5 - 19
"...tic"> <h4>Chuyên Mục Hot</h4> ..."
Line: 1510 Column: 77 - 94
"...-Tin-Hoc">Hỏi Đáp Tin Học</a></..."
Line: 1513 Column: 78 - 95
"...yen-Chon">Nhạc Tuyển Chọn</a></..."
Line: 1514 Column: 68 - 74
"...1-Do-Vui">Đố Vui</a></..."
Line: 1515 Column: 80 - 99
"...-Tin-Hoc">Kiến Thức Tin Học</a></..."
Line: 1520 Column: 6 - 14
"...nk"> <h4>Liên Kết</h4> ..."
Line: 2 Column: 122 - 63
"...onal.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" dir="ltr" lang="vn"> <head..."

Last tested: 10/08/2018

Desktop
Desktop Speed
56%
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 754.3KiB (54% reduction).

Compressing and resizing http://file.vforum.vn/hinh/2018/05/a7(1).jpg could save 190.4KiB (93% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/first-female-jpa-captain-2.jpg could save 131.5KiB (52% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/f9-tim-tinh-tu-lifestyle-1.jpg could save 103.9KiB (50% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/laptop-asus(4).jpg could save 89.7KiB (50% reduction).
Compressing and resizing http://file.vforum.vn/hinh/2018/05/nokia-7.jpg could save 74.1KiB (88% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/realme(2).jpg could save 69KiB (46% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/vivo-11(1).jpg could save 41.2KiB (36% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/agoda(1).jpg could save 30.4KiB (50% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/hp-pavilion-x360.jpg could save 20.6KiB (18% reduction).
Compressing http://vforum.vn/diendan/images/logo/logof.png could save 2KiB (54% reduction).
Compressing http://vforum.vn/diendan/images/logo/vlogo.png could save 1.5KiB (55% reduction).

Your page has 8 blocking script resources and 4 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.Remove render-blocking JavaScript:

http://vforum.vn/diendan/clientscript/yui/yuiloade…der-dom-event.js?v=422
http://vforum.vn/diendan/clientscript/yui/connecti…onnection-min.js?v=422
http://vforum.vn/diendan/clientscript/vbulletin-core.js?v=422
http://vforum.vn/diendan/clientscript/jquery-1.8.0.min.js
http://vforum.vn/diendan/clientscript/vbulletin_overlay.js?v=422
http://vforum.vn/diendan/clientscript/vbulletin_cms.js?v=422
http://vforum.vn/diendan/clientscript/vbulletin_ajax_htmlloader.js?v=422
http://vforum.vn/diendan/clientscript/vbulletin_md5.js?v=422

Optimize CSS Delivery of the following:

http://vforum.vn/diendan/clientscript/vbulletin_cs…ollup.css?d=1523954823
http://vforum.vn/diendan/clientscript/vbulletin_cs…ollup.css?d=1523954823
http://vforum.vn/diendan/clientscript/vbulletin_cs…ional.css?d=1523954823
http://vforum.vn/diendan/css.php?styleid=22&langid…ARCO1_CKEditor_CSS.css

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:

https://www.googletagmanager.com/gtag/js?id=UA-54843367-1 (15 minutes)
http://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

Compacting JavaScript code can save many bytes of data and speed up downloading, parsing, and execution time.
Minify JavaScript for the following resources to reduce their size by 437B (19% reduction).

Minifying http://vforum.vn/diendan/clientscript/vbulletin_cms.js?v=422 could save 226B (14% reduction) after compression.
Minifying http://vforum.vn/diendan/clientscript/vbulletin_ajax_htmlloader.js?v=422 could save 211B (28% reduction) after compression.

Desktop Resource Breakdown
Total Resources48
Number of Hosts7
Static Resources40
JavaScript Resources16
CSS Resources4

Last tested: 10/08/2018

Mobile
Mobile Usability
95%
The page content is too wide for the viewport, forcing the user to scroll horizontally. Size the page content to the viewport to provide a better user experience.
The page content is 422 CSS pixels wide, but the viewport is only 412 CSS pixels wide. The following elements fall outside the viewport:

The element <div class="ui-vbpagenav-pagenumbers">12345678910</div> falls outside the viewport.

Some of the links/buttons on your webpage may be too small for a user to easily tap on a touchscreen. Consider making these tap targets larger to provide a better user experience.
The following tap targets are close to other nearby tap targets and may need additional spacing around them.

The tap target <a href="http://vforum.vn/diendan/" class="vforuma ui-link">FORUM</a> is close to 1 other tap targets final.
The tap target <a href="http://vforum.…e=vBForum_Post" class="headericon ui-link"></a> and 3 others are close to other tap targets final.
The tap target <a href="http://vforum.…ang-chu&amp;page=9" class="ui-vbpagenav-p…tn-icon-notext">9</a> is close to 2 other tap targets.
The tap target <a href="http://vforum.…ang-chu&amp;page=9" class="ui-vbpagenav-p…tn-icon-notext">9</a> is close to 2 other tap targets.
The tap target <a href="http://vforum.…ang-chu&amp;page=1" class="ui-vbpagenav-f…tn-icon-notext">First</a> and 1 others are close to other tap targets.
The tap target <a href="http://vforum.…ang-chu&amp;page=1" class="ui-vbpagenav-f…tn-icon-notext">First</a> and 1 others are close to other tap targets.
The tap target <a href="mobile.php?do=login">Ðăng Nhập</a> is close to 1 other tap targets final.
The tap target <a href="#top" class="scrolltop">Lên Trên</a> is close to 1 other tap targets final.

Mobile Speed
51%
Properly formatting and compressing images can save many bytes of data.
Optimize the following images to reduce their size by 606KiB (45% reduction).

Compressing http://file.vforum.vn/hinh/2018/05/first-female-jpa-captain-2.jpg could save 131.5KiB (52% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/f9-tim-tinh-tu-lifestyle-1.jpg could save 103.9KiB (50% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/laptop-asus(4).jpg could save 89.7KiB (50% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/a7(1).jpg could save 85.3KiB (43% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/realme(2).jpg could save 69KiB (46% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/vivo-11(1).jpg could save 41.2KiB (36% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/nokia-7.jpg could save 33.7KiB (41% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/agoda(1).jpg could save 30.4KiB (50% reduction).
Compressing http://file.vforum.vn/hinh/2018/05/hp-pavilion-x360.jpg could save 20.6KiB (18% reduction).
Compressing http://vforum.vn/diendan/images/mobile/vbulletin-logo.png could save 532B (36% reduction).
Compressing http://vforum.vn/diendan/images/mobile/arrow-left.png could save 202B (33% reduction).

Your page has 4 blocking script resources and 3 blocking CSS resources. This causes a delay in rendering your page.
None of the above-the-fold content on your page could be rendered without waiting for the following resources to load. Try to defer or asynchronously load blocking resources, or inline the critical portions of those resources directly in the HTML.Remove render-blocking JavaScript:

http://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js
http://vforum.vn/diendan/clientscript/vbulletin-mobile-init.js?v=422
http://vforum.vn/diendan/clientscript/jquery/jquery.mobile-1.0.vb.js?v=422
http://vforum.vn/diendan/clientscript/vbulletin-mobile.js?v=422

Optimize CSS Delivery of the following:

http://vforum.vn/diendan/clientscript/jquery/jquer…bile-1.0.min.css?v=422
http://vforum.vn/diendan/clientscript/vbulletin_cs…ollup.css?d=1528354256
http://vforum.vn/diendan/css.php?styleid=21&langid…ARCO1_CKEditor_CSS.css

Your page requires additional network round trips to render the above-the-fold content. For best performance, reduce the amount of HTML needed to render above-the-fold content.
The entire HTML response was not sufficient to render the above-the-fold content. This usually indicates that additional resources, loaded after HTML parsing, were required to render above-the-fold content. Prioritize visible content that is needed for rendering above-the-fold by including it directly in the HTML response.

Only about 55% of the final above-the-fold content could be rendered with the full HTML response.
Click to see the screenshot with only the HTML response: snapshot:7

Setting an expiry date or a maximum age in the HTTP headers for static resources instructs the browser to load previously downloaded resources from local disk rather than over the network.
Leverage browser caching for the following cacheable resources:

https://www.googletagmanager.com/gtag/js?id=UA-54843367-1 (15 minutes)
http://pagead2.googlesyndication.com/pagead/js/adsbygoogle.js (60 minutes)
https://www.google-analytics.com/analytics.js (2 hours)

Mobile Resource Breakdown
Total Resources63
Number of Hosts17
Static Resources40
JavaScript Resources18
CSS Resources3
ww.vforum.vn
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