Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
nang ma » tang ma, sang ma, nang cao
hieu va » lieu va, hieu qua
hanh va » hang va
su cac » tu cac, su cao, su can
ma hoi » mai hoi, xa hoi, ma hoa
soc va » hoc va, loc va, doc va
cua te » cua tu

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: su cac ky nang ma hoi. ((hieu van) OR (hieu va)) cham soc va ((hanh vi) OR (hanh va)) cua te~.
• Adding a wildcard symbol may retrieve word variants: su cac ky nang ma hoi. ((hieu van) or (hieu va)) cham soc va ((hanh vi) or (hanh va)) cua te*.