And if you set num=0 then it returns the normal "did not match any documents" page: https://www.google.com/search?num=0&q=temperature+london https://www.google.

And if you set num=0 then it returns the normal "did not match any documents" page: https://www.google.com/search?num=0&q=temperature+london https://www.google.com/search?num=0&q=temperature+london Which seems like it could be used to fool someone into thinking there really are no results for a subject. Or to pretend Google search is broken ;)