@DW7 I don't think those courses have been uploaded yet, but once they are, they should automatically show up in your dashboard, so you won't need to search for them 🙂 However, adding a search feature is definitely still on the to-do list! 🙂
Ya, once I found out that most of the courses that weren't listed in the categories were intentionally unlisted, I stopped planning to automatically add those courses to My Little Word Land, haha. God willing, I'm probably just going to add just the unlisted courses created by Memrise, since people have been requesting those, and then to keep copies of the other courses somewhere, in case someone asks for them in the future 🙂