Perhaps you should try some spelling variations:
hau triet » cau triet, hanh triet, hieu triet
sach doi » sach hoi, sach moi, sach dao
doi nang » dai nang, hoi nang, voi nang
hieu van » hieu va, thien van, lieu va
danh hai » dang hai, lanh hai, manh hai
su sach » so sach, vu sach
van lam » van nam
lam tuc » lam thuoc, lam truoc, luat tuc
va danh » va dinh, va dan, va hanh
hai hau » hai chau, dai hau, hai hai
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: su sach doi nang ((ma hoi) or (xa hoi)). hieu van lam tuc va danh hai hau triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach doi nang ((ma hoi) OR (xa hoi)). hieu van lam tuc va danh hai hau triet.
• Adding a wildcard symbol may retrieve word variants: su sach doi nang ((ma hoi) or (xa hoi)). hieu van lam tuc va danh hai hau triet*.