Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
mai hoi » mai khoi, dai hoi, lai hoi
va hanh » van hanh, va thanh, va danh
cao duc » dao duc, cao suc, giao duc
hieu va » lieu va, hieu qua
vi cua » vai cua, di cua
va cao » va cac, va co, va dao
su mai » su hai, su dai, tu mai
ma hoi » xa hoi, ma hoa, me hoi
su tai » su thi, tu tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su mai) or (su tai)) ky nang ((ma hoi) or (mai hoi)). hieu va cao duc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su mai) OR (su tai)) ky nang ((ma hoi) OR (mai hoi)). hieu va cao duc va hanh vi cua triet.
• Adding a wildcard symbol may retrieve word variants: ((su mai) or (su tai)) ky nang ((ma hoi) or (mai hoi)). hieu va cao duc va hanh vi cua triet*.