Perhaps you should try some spelling variations:
cua viet » ca viet, hoa viet, cua vat
cam thuc » am thuc, nam thuc, cam thu
hanh vai » hanh vi, hanh va, hanh tai
tang ma » mang may, tang van
hieu ve » hieu va, hieu van
thuc va » thuc vat, thuc dan, thuc day
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
sinh y » sinh ly
ma hoi » mai hoi, xa hoi, ma hoa
sanh y » anh y, hanh y, sach y
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 ((sanh y) or (sinh y)) tang ma hoi. hieu ve cam thuc va hanh vai cua viet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: so ((sanh y) OR (sinh y)) tang ma hoi. hieu ve cam thuc va hanh vai cua viet.
• Adding a wildcard symbol may retrieve word variants: so ((sanh y) or (sinh y)) tang ma hoi. hieu ve cam thuc va hanh vai cua viet*.