Is there such a thing out there as a database of search string usage? i.e. some way to find which search strings are used more often on the internet or a particluar SE? I don't mean general top searches, I mean that if I take two strings (eg. "how to cook pies" and "cooking pies") can I tell which is used more often?

Alternatively, guidelines for how people phrase their searches so I can infer which would be most common.

Ideally it would be great to be able to ask "What are the 100 most common search terms in my field?" so I can create content accorgingly.