Trying to open Nicene and Post-Nicene Fathers volume 1 (I'd forgotten that there was a First Series and Second Series), I typed npnf 1 in the command line. That didn't turn up what I was looking for. Neither did npnf volume I:

You'd think that 1 or I should place a higher match priority on a volume number that matches exactly than on volume numbers that happen to have that digit in them. Please fix this to do a better job of reading our minds.
EDIT: Here's another example. In this case, at least the one I'm looking for shows up in the list, but it should be first rather than last:
