Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sach ty » sach y, sach tu, sach thu
ty dung » tay dung, ly dung, te dung
tai hoi » tai khoi, dai hoi, tai hai
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
vai cua » dai cua, hai cua, lai cua
cua tuc » cua duc, cua tu, cua thuoc

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty dung tai hoi. hieu van cac xuc ((ban thanh) or (gia thanh)) vai cua tuc~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty dung tai hoi. hieu van cac xuc ((ban thanh) OR (gia thanh)) vai cua tuc.
• Adding a wildcard symbol may retrieve word variants: te sach ty dung tai hoi. hieu van cac xuc ((ban thanh) or (gia thanh)) vai cua tuc*.