Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
hanh vai » hanh vi, hanh va, hanh tai
vai cua » dai cua, hai cua, lai cua
thuc va » thuc dan, thuc day
su sach » so sach, vu sach
hieu va » lieu va, hieu qua
vu nang » vuc nang, va nang, vu dang
v nang » va nang, van nang, voi nang
va cam » va cham, va cac, va cao

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 (vu nang)) xa hoi. hieu va cam ((thuc va) or (thuc vat)) hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ((v nang) OR (vu nang)) xa hoi. hieu va cam ((thuc va) OR (thuc vat)) hanh vai cua viet.
• Adding a wildcard symbol may retrieve word variants: su sach ((v nang) or (vu nang)) xa hoi. hieu va cam ((thuc va) or (thuc vat)) hanh vai cua viet*.