If you type in a result that still has 3 results it would be cool to type in something like > to "select" the next entry down. Although this would require a better way to show the currently selected entry, which is currently just the top entry. I know you can't move the actual "cursor" down (like what would happen if you press the down arrow) but you could do something like bold, italics, or a different marker on the left to show which completion is the currently active one.
Haha, sorry if this is a little bit garbled. Hopefully you get the gist of what I'm trying to say.
Jason