This is a cool idea and one I've personally used for some time.
Google is groovy, but for this trick, Altavista is much better:
Altavista allows you to enter more than one search term at a time and at the bottom of the page, returns the number of hits for each one. With Google, you have to look up each spelling seperately and note down the numbers. Example:
The number of words that match your search terms:
corolary 143 • corrollary 528 • corrolary 740 • corollary 78375
Merriam-Webster is fine if you're only interested in American spelling of English words.
Word processors are great if you have the money and they support your chosen languages.
Search engines allow you to look up neologisms, trademarked words, phrases, foreign words, quotes, and names of famous people. (Sadly, hyphenation can't be checked yet)...
The number of words that match your search terms:
jack lemon 935 • jack lemmon 32821
The number of words that match your search terms:
seig hiel 14 • sieg hiel 41 • seig heil 674 • sieg heil 8665
The number of words that match your search terms:
nürnburg 709 • nuremburg 19721 • nuremberg 259484 • nürnberg 1245022
The number of words that match your search terms:
kabballah 994 • qaballah 1333 • caballa 4512 • qabala 5673 •
qaballa 15694 • kabala 17434 • qabalah 19718 • kaballah 20226 •
kabbala 31476 • cabala 32975 • kabbalah 92863 • kabalah 209304