Google Search Terms:Female

I just accidentally discovered something about google search that gives me pause for thought.
If you use a search term that includes the word "female" without the quotation marks,  it will also give you results with the word "girl" in it.

I guess it could be helpful at times, but would it also be helpful to creepy perverts?  They could say they were looking for adult material and Google is responsible for the underage material that appeared on their screen.

I think that's a bit off...