I just want a search that shows what I'm looking for when I've typed the first three characters of the search term (as, e.g. the windows start menu does now), b

I just want a search that shows what I'm looking for when I've typed the first three characters of the search term (as, e.g. the windows start menu does now), but still shows that result when I type the 4th character before my brain processes the fact that the result is there (you know, since my responses aren't that fuckin fast) and all the results change up.