Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thuoc ma » hoc ma, duoc ma
na thuoc » nha thuoc, nam thuoc, va thuoc
lang ha » long ha
danh vi » dinh vi, danh di, danh va
hieu le » hieu ve, hieu he, hieu ly
sai ky » sac ky
ha hoi » hoa hoi, ha noi, xa hoi
le na » le nam, le va, le ta

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 ((sai ky) OR (cac ky)) lang ha hoi. hieu le na thuoc ma ((danh vi) OR (hanh vi)) cua triet~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ((sai ky) or (cac ky)) lang ha hoi. hieu le na thuoc ma ((danh vi) OR (hanh vi)) cua triet~".
• Adding a wildcard symbol may retrieve word variants: tu ((sai ky) or (cac ky)) lang ha hoi. hieu le na thuoc ma ((danh vi) OR (hanh vi)) cua triet*.