Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cam thuc » am thuc, cam thu, can thuc
hanh vai » hanh vi, hanh va, hanh tai
nam thuc » nam thuoc, am thuc, nam thu
vai cua » dai cua, hai cua, lai cua
va hanh » van hanh, va thanh, va danh
su sach » so sach, vu sach
sach va » sach xa, sach ha, sach dao
hieu va » lieu va, hieu qua
hieu ve » hieu van
cao hoi » cau hoi, co hoi, cao hoc
va nang » van nang, da nang, cam nang

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