Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hieu va » lieu va, hieu qua
danh di » danh du, xanh di, danh dien
danh vi » hanh vi, dinh vi, danh va
can hoc » van hoc, dan hoc, cao hoc
tu sach » thu sach, su sach, te sach
hieu ve » hieu van
sang ma » tang ma, nang ma, sang tao
y sang » _ sang, duy sang
ma hoi » mai hoi, xa hoi, ma hoa

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

• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y sang ma hoi. ((hieu ve) OR (hieu va)) can hoc dan ((danh vi) OR (danh di)) ve triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu sach y sang ma hoi. ((hieu ve) or (hieu va)) can hoc dan ((danh vi) OR (danh di)) ve triet~".
• Adding a wildcard symbol may retrieve word variants: tu sach y sang ma hoi. ((hieu ve) or (hieu va)) can hoc dan ((danh vi) OR (danh di)) ve triet*.