Perhaps you should try some spelling variations:
nang tai » hang tai, tang tai, sang tai
cam thuc » am thuc, nam thuc, can thuc
hanh vai » hanh vi, hanh va, hanh tai
so sach » so sanh, bo sach, co sach
sach va » sach xa, sach ha, sach dao
va nang » van nang, da nang, cam nang
tai hoi » tai khoi, dai hoi, tai hai
hieu ve » hieu va, hieu van
cam thu » nam thu, cac thu, ca thu
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua

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