Right. Basically, that means you first have to find the notation, which will probably be in treble clef, then transpose it yourself.

J C's Tunefinder is probably the best online resource to use, at any rate for instrumental music. It will return results as abc, midi or staff.

There are programs available that will transpose midi (some will also import abc) and produce printable staff. Some are easier, or quicker, or cheaper, or produce nicer results, than others. You'll need to look at some of the many discussions here on that very subject (there's one going at the moment) and decide what looks best for you.