Perhaps you should try some spelling variations:
thanh luc » thanh luu, nhan luc, thanh lap
hieu van » hieu va, thien van, lieu va
hanh vai » hanh vi, hanh va, hanh tai
than luc » nhan luc, than duc, thanh luu
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
te sach » toc sach
va nang » van nang, da nang, cam nang
cua tre » cua te, cuu tre, cua triet
v nang » vu nang, van nang, voi nang

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 ((v nang) OR (va nang)) xa hoi. hieu van ((thanh luc) or (than luc)) va hanh vai cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ((v nang) OR (va nang)) xa hoi. hieu van ((thanh luc) OR (than luc)) va hanh vai cua tre.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ((v nang) OR (va nang)) xa hoi. hieu van ((thanh luc) or (than luc)) va hanh vai cua tre".
• Adding a wildcard symbol may retrieve word variants: te sach ((v nang) OR (va nang)) xa hoi. hieu van ((thanh luc) or (than luc)) va hanh vai cua tre*.