Perhaps you should try some spelling variations:
nam thuc » nam thuoc, nam thu, nam tu
hanh lai » hanh lam, hanh tai, thanh lap
tang van » dang van, hoang van, trong van
su sach » so sach, vu sach
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, dam thuc
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
van hoi » van hoa, van hoc, van hoe
ky tang » ky nang, ky dang, kho tang
lai cua » dai cua, hai cua, lai chau

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 ky tang van hoi. hieu ve ((cam tuc) or (((nam thuc) OR (am thuc)))) va hanh lai cua vat~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky tang van hoi. hieu ve ((cam tuc) OR (((nam thuc) OR (am thuc)))) va hanh lai cua vat.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky tang van hoi. hieu ve ((cam tuc) or (((nam thuc) OR (am thuc)))) va hanh lai cua vat".
• Adding a wildcard symbol may retrieve word variants: su sach ky tang van hoi. hieu ve ((cam tuc) or (((nam thuc) OR (am thuc)))) va hanh lai cua vat*.