User-agent: Mediapartners-Google*
Disallow:

# The Googlebot is the main search bot for google
User-agent: Googlebot

Disallow: /linkex/
Disallow: /cache_files/
Disallow: /inc/

Disallow: /buscar.php
Disallow: /der.php
Disallow: /end_cache.php
Disallow: /start_cache.php
Disallow: /search.php