Missing Game

I decided that I would search up all the games I've owned for various consoles, and add them to my collection on here. I have come across a slight hitch though: I searched for "Deep Duck Trouble" and the search only yielded the Game Gear version, when the version I have is for the Master System.

Is there any way that the SMS version can be added to the site? I understand that this may be in the wrong category, but I wasn't sure where to post it.

Thanks.