Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
van thanh » ban thanh, van tuan
hieu van » thien van, lieu va, hieu ve
luoc van » luoc can, luoc va, luc van
cam luoc » cam xuc, tom luoc, cam lo
hieu va » lieu va, hieu qua
te sach » toc sach
sang ma » nang ma, sang tao, mang may
tang ma » mang may, tang van
cua tre » cua te, cuu tre, cua triet

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) OR (hieu va)) cam luoc 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) OR (hieu va)) cam luoc van thanh dai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach _ ((sang ma) or (tang ma)) hoi. ((hieu van) OR (hieu va)) cam luoc van thanh dai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach _ ((sang ma) or (tang ma)) hoi. ((hieu van) OR (hieu va)) cam luoc van thanh dai cua tre*.