Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
kem phat » te phat, tam phat, ve phat
va hanh » van hanh, va thanh, va danh
lam tuc » lam thuoc, lam truoc, luat tuc
van lam » van nam
sach ly » sach y, sach lo, sach ty
te sach » toc sach
ly nang » ky nang, ly hang, ly vang
de phat » de phap, te phat, dao phat
ma hoi » mai hoi, ma hoa, me hoi
tuc va » thuc va, truc va, tuc xa

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 ly nang ((ma hoi) or (xa hoi)). hieu van lam tuc va hanh ((kem phat) OR (de phat)) trien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ly nang ((ma hoi) OR (xa hoi)). hieu van lam tuc va hanh ((kem phat) OR (de phat)) trien.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te sach ly nang ((ma hoi) or (xa hoi)). hieu van lam tuc va hanh ((kem phat) OR (de phat)) trien".
• Adding a wildcard symbol may retrieve word variants: te sach ly nang ((ma hoi) or (xa hoi)). hieu van lam tuc va hanh ((kem phat) OR (de phat)) trien*.