Perhaps you should try some spelling variations:
van thanh » ban thanh, van tuan
thanh dai » thanh hai, thanh tai, thanh dat
hieu van » hieu va, thien van, lieu va
te sach » toc sach
sang ma » nang ma, sang tao, mang may
tang ma » mang may, tang van
van cam » van nam, van lam, van cau
cua tre » cua te, cuu tre, cua triet
cam lo » nam lo, cam ly, cam o
lo van » le van, vo van, so van

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 _ ((sang ma) or (tang ma)) hoi. hieu van cam lo van thanh dai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach _ ((sang ma) OR (tang ma)) hoi. hieu van cam lo van thanh dai cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach _ ((sang ma) or (tang ma)) hoi. hieu van cam lo van thanh dai cua tre*.