Perhaps you should try some spelling variations:
thanh nghia » thanh nghi, thanh nga, thanh nha
nghia cua » nghiep cua, nghia xa, nghia duy
hieu van » thien van, lieu va, hieu ve
nam thuc » nam thuoc, am thuc, nam tu
da thanh » dao thanh, dat thanh, dam thanh
hieu va » lieu va, hieu qua
cua tre » cua te, cuu tre, cua triet
vu sac » vu sach, vu san, va sac
sac ky » cac ky, sai ky
x hoi » xa hoi, o hoi, x ho

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

• Performing a fuzzy search may retrieve terms with similar spellings: vu sac ky nang x hoi. ((hieu van) OR (hieu va)) ((nam thuc) or (nam thu)) da thanh nghia cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: vu sac ky nang x hoi. ((hieu van) OR (hieu va)) ((nam thuc) OR (nam thu)) da thanh nghia cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "vu sac ky nang x hoi. ((hieu van) OR (hieu va)) ((nam thuc) or (nam thu)) da thanh nghia cua tre*".