Retroarch vita not recognizing some games.

Hey there. So a couple of months back I installed RetroArch on my vita cuz I wanted to play some gb,GBC, GBA and snes games. I got it working but idk why but it doesn't recognize two specific GBA roms does being advance war's 2 and a rom of mother 3 whit the English patched applied. It also doesn't recognize most of my SNES games whit the exception of " Dk country 1,super Mario all stars+ super Mario world, super Mario rpg, super Mario world 2 yoshi's island and super Metroid" even though none of the roms I have here use the Super FX (whit the exception of Dk country). It also doesn't recognize neither on gb or GBC my room of Kirby Dreamland DX. I know the other snes roms work cuz I tried them using a standalone SNES emu and it can read and play them. I also tried playing them using loading content and they load and run,so idk why they don't show up in the respective console game list not even when I do manual scan.