Perhaps you should try some spelling variations:
cac dinh » xac dinh, cac tinh, cac hinh
dinh dat » dinh ket, dinh van, dinh lam
so sang » so sanh, so dang, so lang
cac xuc » cam xuc, cac nuoc, chat xuc
tang ma » tang van
dat cua » dai cua, day cua, mat cua
xuc cac » xuc tac, tuc cac, xuc cam
sang ma » nang ma, sang tao, sang tai
sang ky » sang kyo, dang ky, tang ky
hieu va » lieu va, hieu qua
cua tu » cua tuc, cua su, cua cu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: so sang ky ((((tang ma) OR (mang may))) or (sang ma)) hoi. hieu va cac xuc cac dinh dat cua tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sang ky ((((tang ma) OR (mang may))) OR (sang ma)) hoi. hieu va cac xuc cac dinh dat cua tu*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "so sang ky ((((tang ma) OR (mang may))) or (sang ma)) hoi. hieu va cac xuc cac dinh dat cua tu*".