Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
va hanh » van hanh, va thanh, va danh
cam thu » nam thu, cac thu, ca thu
hieu ve » hieu va, hieu van
su sach » vu sach
cao hoi » cau hoi, co hoi, cao hoc
va nang » van nang, da nang, cam nang
so sach » so sanh, bo sach, co sach
vi cua » vai cua, di cua

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