Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
cac nuoc » cap nuoc, hoc nuoc, dat nuoc
ban hanh » ban hang
tu nang » tru nang, tu nong, tu nano
hieu ve » hieu van
hieu va » lieu va, hieu qua
va hanh » van hanh, va thanh, va danh
su cac » tu cac, su cao, su can
cac tu » cac thu, cach tu, cac du
vi cua » vai cua, di cua
x hoi » xa hoi, o hoi, x ho

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

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