User-agent: *
Disallow: /plugins/
Disallow: /ScriptResource.axd  
Disallow: /combinescriptshandler.axd  
Disallow: /WebResource.axd 

User-agent: bingbot
Disallow: /ScriptResource.axd  
Disallow: /combinescriptshandler.axd  
Disallow: /WebResource.axd 

User-agent: yandex
Disallow: /ScriptResource.axd  
Disallow: /combinescriptshandler.axd  
Disallow: /WebResource.axd 

User-agent: Googlebot
Disallow: /ScriptResource.axd  
Disallow: /combinescriptshandler.axd  
Disallow: /WebResource.axd