Perhaps you should try some spelling variations:
thanh luc » thanh luu, than luc, nhan luc
van thanh » ban thanh, van tuan
hieu van » hieu va, thien van, lieu va
van hanh » ban hanh, van anh, van ban
vai cua » dai cua, hai cua, lai cua
va hanh » va thanh, va danh, ban hanh
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 ((va hanh) or (van 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 ((va hanh) OR (van 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 ((va hanh) or (van 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 ((va hanh) or (van hanh)) vai cua tre*.