Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, hieu ve
lam duoc » nam duoc, luat duoc, lam thuoc
van danh » van doanh, van anh, van hanh
danh sai » dung sai, danh bat, danh dau
te sach » toc sach
sach ky » sac ky, sach y, sach ty
lam duc » pham duc, nam duoc, lam dung
sai cua » dai cua, hai cua, lai cua
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 ky nang x ho. ((hieu van) or (lieu va)) ((lam duc) OR (lam duoc)) van danh sai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky nang x ho. ((hieu van) OR (lieu va)) ((lam duc) OR (lam duoc)) van danh sai cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ky nang x ho. ((hieu van) or (lieu va)) ((lam duc) OR (lam duoc)) van danh sai cua tre*".