Are often for say the Logitech Harmony and for codes you hit the Logitech forums.
Also the codes are by the set and not the remote so your search may be coming up short since you are looking at the remote and not the set.
I have been trying to look for a user manual or manual and TV codes for the remote. I couldn't find anything for it online. Only products have been popping up. No manual or user manual for the remote.