Perhaps you should try some spelling variations:
thien van » thi van
thuc dant » thuoc dang, thuc hanh, thuc vat
cua triet » cua viet, su triet, va triet
thuc dan » thuc hanh, hoc dan, thuc vat
mai hoi » mai khoi, dai hoi, lai hoi
ma hoi » xa hoi, ma hoa, me hoi
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu cac ky nang ((ma hoi) OR (mai hoi)). thien van nam ((thuc dan) or (thuc dant)) hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cac ky nang ((ma hoi) OR (mai hoi)). thien van nam ((thuc dan) OR (thuc dant)) hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu cac ky nang ((ma hoi) OR (mai hoi)). thien van nam ((thuc dan) or (thuc dant)) hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: tu cac ky nang ((ma hoi) OR (mai hoi)). thien van nam ((thuc dan) or (thuc dant)) hanh vi cua triet*.