User-agent: *
Disallow: /cart
Disallow: /option_user
Disallow: /search

User-Agent: googlebot 
Disallow: *pagi_cuantos=24*
Disallow: *pagi_cuantos=12*
Disallow: *pagi_cuantos=48*
Disallow: *pagi_cuantos=48*
Disallow: *_pagi_pg=1*

User-Agent: Yandex 
Disallow: *pagi_cuantos=24*
Disallow: *pagi_cuantos=12*
Disallow: *pagi_cuantos=48*
Disallow: *pagi_cuantos=48*
Disallow: *_pagi_pg=1*