You should have a manual scan option where you can just scan one TP at a time.
Some receivers also have channel lists, from other owners, which you can load.
You have a lot of satellites left to try, from memory, 3E, 5E, 7E, 9E, 10E, 16E, 23.5E, 39E, 42E, and then there's west, 4W, 5W, 8W, 12.5W, 15W, 24.5W and 30W.
There are a lot of other satellites but you're best sticking to the ones you want to view, and the ones which are most popular for feeds.