Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
thuc day » thuc vat
hanh vai » hanh vi, hanh va, hanh tai
thuc dan » thuc hanh, hoc dan, thuc vat
nang dai » nang dau, nang tai, lang dai
hieu ve » hieu va, hieu van
sach va » sach xa, sach ha, sach dao
dai hoi » dai hoc, dai hai, dai moi
va nang » van nang, da nang, cam nang
vai cua » dai cua, hai cua, lai cua
so sach » so sanh, bo sach, co sach
ve cam » ve cham, ve cac, va cam

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