User-agent: Baiduspider
Disallow: /

User-agent: sogou
Disallow: /

User-agent:google
Allow: / 
Disallow: /*?*
Disallow: /manage/ 
Disallow: /DB/ 

User-agent:yahoo
Allow: / 
Disallow: /*?*
Disallow: /manage/ 
Disallow: /DB/