Unicode normalization

Unicode normalization

Google does a decent job with that kind of thing - at least for what I do.

German has vowels with the umlaut (the two dots above the character.) The standard way to type these on a key board that doesn't have the umlauted characters is to substitute a two character combination (ae for umlaut a, ue for umlaut u, etc.) Google properly find words containing the umlaut characters, and also find matches to the double cahracter substitute if you give it an umlaut (my home computer has a german keyboard, my work computer has an amercain keyboard, so I get to see both sides of the problem.