Vanity Urls with mod_rewrite not working

Hi all.

I install oracle webcenter sites 12.2.1.0.0 on linux and oracle OHS 12 12.1.3.0.0 on linux.

My oracle webcenter site working on link 192.168.57.104:7003/sites/Sites?lookuphost=/&lookuppage=ca_nhan

I configured ohs using follwing config. This configure follow guide : http://docs.oracle.com/cd/E29542_01/doc.1111/e29636/config_vanity_url.htm#WBCSA7532

RewriteEngine On
RewriteRule ^(.*)$ /sites/Sites?lookuphost=/&lookuppage=$1 [L]
RewriteLog /tmp/rewritelog.txt
<Location /sites>
        SetHandler weblogic-handler
        WebLogicHost 192.168.57.104
        WeblogicPort 7003
</Location>

When i access <ohs-host>:7777/ca_nhan error 404 not found and

i can't access link <ohs-host>:7777/sites/Sites?lookuphost=/&lookuppage=ca_nhan

Thank you!.