User-agent: Yandex
Disallow: /*_openstat
Disallow: /*from=adwords
Disallow: /*utm_source
Disallow: /index.php?lang=ru
Disallow: /?searchword
Disallow: /*lang=en
Host: www.dielectric.ru

User-agent: Googlebot
Disallow: /*_openstat
Disallow: /*from=adwords
Disallow: /*utm_source
Disallow: /*lang=en
Disallow: /index.php?lang=ru
Disallow: /?searchword

User-agent: *
Disallow: /index.php?lang=ru
Disallow: /?searchword