Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban thanh » ban hanh, ban hang
tu cach » tu cac
cach tu » cach thuc
tu nang » tru nang, tu nong, tu nano
hieu ve » hieu va, hieu van
ve pham » vi pham, v pham, ve phan
va hanh » van hanh, va thanh, va danh
de cua » le cua, te cua, dieu cua
x hoi » o hoi, x ho, 5 hoi

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu cach tu nang ((x hoi) OR (xa hoi)). hieu ve pham duc ((va hanh) or (ban thanh)) de cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach tu nang ((x hoi) OR (xa hoi)). hieu ve pham duc ((va hanh) OR (ban thanh)) de cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cach tu nang ((x hoi) OR (xa hoi)). hieu ve pham duc ((va hanh) or (ban thanh)) de cua triet".
• Adding a wildcard symbol may retrieve word variants: tu cach tu nang ((x hoi) OR (xa hoi)). hieu ve pham duc ((va hanh) or (ban thanh)) de cua triet*.