Source: http://lifehacker.com/5583436/get-wildcard-suggestions-in-google-autocomplete
Google's autocomplete is a handy tool for both saving time and getting a feel for what people are searching. Reader scantorscantor points out a cool trick for getting a bit more from the autocomplete.
Normally, Google only autocompletes the end of a search query. If you type in a phrase and then delete the middle, though, it'll autocomplete at the place you deleted, leaving the end intact.
[via #tips]