Eu duvido que exista algo assim, e há outros mecanismos de pesquisa para que uma solução específica do Google não seja eficaz em qualquer caso. Talvez você possa configurar o OpenDNS e testar o FamilyShield serviço, que é gratuito:
Instantly blocks access to adult websites. No complicated configuration.
FamilyShield is pre-configured to block adult websites across your Internet connection. Just turn it on and go. The filter is always up-to-date, adding new sites 24/7.
Flexible parental controls that protect every Internet-connected device in your home, instantly.
When you set up FamilyShield on your router, every device in your home gets protected. That means everything: your kids' Xbox, Playstation, Wii, DS, iPad, and even their iPhone. Learn more.