Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh va, hanh tai
vuc nang » cuc nang, vu nang, chuc nang
mai hoi » mai khoi, dai hoi, lai hoi
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
truc va » thuc va, thuc vat, trung va
qua cau » quan cau, qua cac, qua ca
su sach » so sach, vu sach
ma hoi » xa 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 (mai hoi)). hieu qua cau truc va hanh vai cua viet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ((v nang) OR (vuc nang)) ((ma hoi) OR (mai hoi)). hieu qua cau truc va hanh vai cua viet".
• Adding a wildcard symbol may retrieve word variants: su sach ((v nang) OR (vuc nang)) ((ma hoi) OR (mai hoi)). hieu qua cau truc va hanh vai cua viet*.