Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
van hanh » van thanh, ban hanh, van anh
tu nang » tru nang, tu nong, tu nano
hieu va » lieu va, hieu qua
va hanh » va thanh, va danh, ban hanh
su cac » tu cac, su cao, su can
cac tu » cac thu, cach tu, cac du
va cam » va cham, va cac, va cao
vi cua » vai cua, di cua
x hoi » xa hoi, x ho, 5 hoi
o hoi » co hoi, o hoc, o hai

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