Perhaps you should try some spelling variations:
hanh vai » hanh vi, hanh va, hanh tai
nam thuc » nam thuoc, am thuc, nam thu
cam thuc » am thuc, can thuc, cay thuc
so sach » so sanh, bo sach, co sach
cam thu » nam thu, cac thu, ca thu
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa

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