A ROM that works in MAME 0.200 will not work in Mame4droid 0.139u1, and vice versa. Your ROMs must be specifically from a 0.139u1 ROM set (or a complete 0.139 set).
These are the most user-friendly but take up the most space. Every game file contains everything it needs to run, including necessary BIOS files. You do not need a parent rom to run a clone. Mame4droid 0.139u1 Roms