Generally OEM remotes pretty limited as "universals". This one seems a little better than most, but it still seems not to have a code search function nor a learning capability. Consequently you're stuck with what you see is what you get - the only alternative being to manually trawl through the whole set/s, with no guarantee that you'll find anything that works.

Note: Just to confirm, we are talking of the VSX-822-K aren't we?