Perhaps you should try some spelling variations:
cau trung » cau truong, cac trung, cao trung
cua viet » ca viet, hoa viet, cua vat
hanh lai » hanh lam, hanh tai, thanh lap
vuc nang » cuc nang, vu nang, chuc nang
trung va » truong va, trang va, trung ha
lai cua » dai cua, hai cua, lai chau
va hanh » van hanh, va thanh, va danh
qua cau » quan cau, qua cac, qua ca
su sach » so sach, vu sach
ma hoi » mai hoi, ma hoa, me hoi
v nang » va nang, vu nang, van nang

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 ((v nang) or (vuc nang)) ((ma hoi) or (xa hoi)). hieu qua cau trung va hanh lai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((v nang) OR (vuc nang)) ((ma hoi) OR (xa hoi)). hieu qua cau trung va hanh lai cua viet.
• Adding a wildcard symbol may retrieve word variants: su sach ((v nang) or (vuc nang)) ((ma hoi) or (xa hoi)). hieu qua cau trung va hanh lai cua viet*.