That is correct - sort of. In all cases the right cursor key works just fine except: after I have my search results displayed on the right side, the right cursor won't "cross over" from the left side keyboard to the right side search results. It will move to the right side of the keyboard, but no further. I hear the "bonk" from the TV indicating that the command was received, but the "cursor" stays on the keyboard - no way to get to the right side results.
This is sometimes, but not always. And, it might be specific to a particular channel called VEVO that has music videos. That is, on VEVO I can sometimes get to the search results and select, but sometimes I can't. Right now I am not certain that I have experienced this on any other channels (but I may have).
Not sure how the community works so you may have this. I think the answer to your question is that you use the right arrow key. Once you have your search results on the right, move to the right with the right arrow key - all the way to the right edge of the keypad - then one more push and the "cursor" should jump to the search results. Now you can navigate and select your movie, etc.