Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thien van » thi van
cham duc » pham duc, cham soc, pham duy
van hanh » van thanh, ban hanh, van anh
hieu ve » hieu va, hieu van
duc van » duc va, duc tan, duc manh
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
nang o » nang co, nang ho, nang ro
vi cua » vai cua, di cua
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 sac ky nang o hoi. ((hieu ve) or (thien van)) cham duc van hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sac ky nang o hoi. ((hieu ve) OR (thien van)) cham duc van hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: su sac ky nang o hoi. ((hieu ve) or (thien van)) cham duc van hanh vi cua triet*.