Fuzzy Match Account Name

For further info visit here: http://fuzzymatchcompanynames.com/ The Account Type is chosen at random and if optional fields are not populated, nothing else but Name & Type will be filled. Is there a way to either exclude them from the matching rule criteria or can anyone tell me how fuzzy account names need to be to not be considered as a match? For example not considering those with "Name contains 'Test' ". I know my current way is sure to produce a match, because it differs by but one number. I could consider adding a large random number at the end of the string.