ok, kaya ngayon alam ko kung bakit hindi namin maaaring gamitin. htaccess sa / forum folder 
isa pang test. lamang paganahin vBET muli, idagdag ito htaccess sa pangunahing folder (palitan ang lumang isa (HINDI SA / forum FOLDER)):
Code:
# Comment the following line (add '#' at the beginning)
# to disable mod_rewrite functions.
# Please note: you still need to disable the hack in
# the vBSEO control panel to stop url rewrites.
RewriteEngine On
# Some servers require the Rewritebase directive to be
# enabled (remove '#' at the beginning to activate)
# Please note: when enabled, you must include the path
# to your root vB folder (i.e. RewriteBase /forums/)
#RewriteBase /
#RewriteCond %{HTTP_HOST} !^www\.hj-research\.com
RewriteCond %{HTTP_HOST} !(^www\.hj-research\.com$|^cdn\.hj-research\.com$)
RewriteRule (.*) http://www.hj-research.com/$1 [R=301,L]
#RewriteCond %{HTTP_HOST} !^www\.yourdomain\.com
#RewriteRule (.*) http://www.yourdomain.com/forum/$1 [L,R=301]
RewriteRule ^forum/((urllist|sitemap_).*\.(xml|txt)(\.gz)?)$ forum/vbseo_sitemap/vbseo_getsitemap.php?sitemap=$1 [L]
#vbet translator rules start
RewriteRule ^forum/?(af|sq|ar|hy|az|eu|be|bg|ca|zh-CN|hr|cs|da|nl|en|et|tl|fi|fr|gl|ka|de|el|ht|iw|hi|hu|is|id|ga|it|ja|ko|lv|lt|mk|ms|mt|no|fa|pl|pt|ro|ru|sr|sk|sl|es|sw|sv|zh-TW|th|tr|uk|ur|vi|cy|yi)/$ forum/vbenterprisetranslator_seo.php?vbet_lang=$1&redirected=/ [L,QSA]
RewriteRule ^forum/?(af|sq|ar|hy|az|eu|be|bg|ca|zh-CN|hr|cs|da|nl|en|et|tl|fi|fr|gl|ka|de|el|ht|iw|hi|hu|is|id|ga|it|ja|ko|lv|lt|mk|ms|mt|no|fa|pl|pt|ro|ru|sr|sk|sl|es|sw|sv|zh-TW|th|tr|uk|ur|vi|cy|yi)/(.*)?$ forum/vbenterprisetranslator_seo.php?vbet_lang=$1&redirected=/$2 [L,QSA]
RewriteCond %{REQUEST_URI} !(admincp/|modcp/|vbseo_sitemap/|cron)
RewriteRule ^forum/((archive/)?(.*.php(/.*)?))$ forum/vbenterprisetranslator_seo.php [L,QSA]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !^(admincp|modcp|clientscript|cpstyles|images)/
RewriteRule ^(.+)$ forum/vbenterprisetranslator_seo.php [L,QSA]
#vbet translator rules end
RewriteCond %{REQUEST_URI} !(media/|admincp/|modcp/|cron|vbseo_sitemap)
RewriteRule ^forum/((archive/)?(.*\.php(/.*)?))$ forum/vbseo.php [L,QSA]
RewriteCond %{REQUEST_FILENAME} !-f
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !/(media|admincp|modcp|clientscript|cpstyles|images)/
RewriteRule ^(.+)$ forum/vbseo.php [L,QSA]
## Expires
<ifModule mod_expires.c>
ExpiresActive On
ExpiresDefault "access plus 1 seconds"
ExpiresByType text/html "access plus 1 seconds"
ExpiresByType image/gif "access plus 3456000 seconds"
ExpiresByType image/jpeg "access plus 3456000 seconds"
ExpiresByType image/png "access plus 3456000 seconds"
ExpiresByType text/css "access plus 3456000 seconds"
ExpiresByType text/javascript "access plus 3456000 seconds"
ExpiresByType application/javascript "access plus 3456000 seconds"
ExpiresByType application/x-javascript "access plus 3456000 seconds"
</ifModule>
## Compression
<ifmodule mod_headers.c>
<ifmodule mod_deflate.c>
AddOutputFilterByType DEFLATE text/html text/css text/xml application/x-javascript
BrowserMatch ^Mozilla/4 gzip-only-text/html
BrowserMatch ^Mozilla/4\.0[678] no-gzip
BrowserMatch \bMSIE !no-gzip !gzip-only-text/html
</ifmodule>
</ifmodule>
#Remove index.php from hj-research.com/index.php
#rewrite engine on
RewriteCond %{THE_REQUEST} index\.php
RewriteCond %{QUERY_STRING} ^$
RewriteRule ^index\.php$ / [L,R=301]
bilang alam mo na may htaccess vbet na ito ay gumagana lamang sa mga pahina ng forum.
pagsubok ito. at suriin na google ay maaaring makita ang iyong mga sitemap
salamat