Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
te sach » toc sach
van lam » van nam
lam luc » lao luc, lam duoc
va hanh » van hanh, va thanh, va danh
hanh te » hanh tu, hanh ve, hanh de
te phat » tu phat
sach v » sach va, sach y, sach 2
v nang » va nang, vu nang, van nang
ma hoi » mai hoi, ma hoa, me hoi
luc va » duc va, tuc va, loc va

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 ((ma hoi) or (xa hoi)). hieu van lam luc va hanh te phat trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach v nang ((ma hoi) OR (xa hoi)). hieu van lam luc va hanh te phat trien.
• Adding a wildcard symbol may retrieve word variants: te sach v nang ((ma hoi) or (xa hoi)). hieu van lam luc va hanh te phat trien*.