User-agent: Yandex
Disallow: /*_openstat
Disallow: /*from=adwords
Disallow: /*utm_source
Disallow: /*searchword
Host: www.visiodent.ru

User-agent: Googlebot
Disallow: /*_openstat
Disallow: /*from=adwords
Disallow: /*utm_source
Disallow: /*searchword

User-agent: *
Disallow: