I finally found something I can't do with Google Search. It is trying to solve look for words of a specific length, either start with end with etc. Basically a word search. We normally do that when we want to solve a puzzle but in this particular case, it was a homework assignment for my daughter.
Luckily there are a few sites that provide solutions.
http://www.morewords.com/ To find a 5 character word which starts with a, you just search a----
http://www.onelook.com/ To find a 5 character word which starts with a, you just search a????. However, with this site, you may need to click on common words and phases otherwise it will include a lot of other results which may contain -, ' etc.