Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
ban hanh » ban hang
va hanh » van hanh, va thanh, va danh
cac xuc » cam xuc, cac nuoc, chat xuc
hieu ve » hieu va, hieu van
cong o » cong so, cong co, cong bo
cac tu » cac thu, cach tu, cac du
ve cac » va cac, vien cac
cong x » cong _, cong xay, cong xon
vi cua » vai cua, di cua
su cac » tu cac, su cao, su can

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