Perhaps you should try some spelling variations:
cau trieu » cac trieu, cau triet, chua trieu
hieu van » hieu va, thien van, lieu va
danh hai » dang hai, lanh hai, manh hai
so sach » so sanh, bo sach, co sach
sach ly » sach y, sach lo, sach ty
ly nang » ky nang, ly hang, ly vang
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
va danh » va dinh, va dan, va hanh
hai cau » hai chau, hai chu, hai hau
me hoi » le 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: so sach ly nang ((me hoi) or (xa hoi)). hieu van cam tuc va danh hai cau trieu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so sach ly nang ((me hoi) OR (xa hoi)). hieu van cam tuc va danh hai cau trieu.
• Adding a wildcard symbol may retrieve word variants: so sach ly nang ((me hoi) or (xa hoi)). hieu van cam tuc va danh hai cau trieu*.