If you search using too many words or too many flags (ie: intitle, inurl, etc…) Google won’t give you the results.
We’re sorry…
… but your query looks similar to automated requests from a computer virus or spyware application. To protect our users, we can’t process your request right now.
We’ll restore your access as quickly as possible, so try again soon. In the meantime, if you suspect that your computer or network has been infected, you might want to run a virus checker or spyware remover to make sure that your systems are free of viruses and other spurious software.
We apologize for the inconvenience, and hope we’ll see you again on Google.
Yahoo does not do such things. More and more SEO’s are using Yahoo over Google to do keyword research.

