I have configured the Apache mod_expires in 2,2,8 but not whether there is anything else that could be done to promote the issue with google and vbseo, I put like this:

<IfModule mod_expires.c>
ExpiresActive On
ExpiresDefault "access plus 1 minutes"
ExpiresByType text/html "modification plus 1 hours"
ExpiresByType image/gif "modification plus 1 days"
ExpiresByType image/jpeg "modification plus 1 days"
ExpiresByType image/png "modification plus 1 days"
ExpiresByType text/css "access plus 1 hours"
ExpiresByType text/javascript "access plus 1 hours"
ExpiresByType application/x-javascript "access plus 1 hours"
ExpiresByType text/xml "access plus 900 seconds"
</IfModule>

Thank you very much and best regards