Perhaps you should try some spelling variations:
cau treo » cau theo, cau tren, cau triet
ban hanh » ban hang
tang ma » mang may, tang van
cua tre » cua te, cuu tre, cua triet
ky tang » ky nang, ky dang, kho tang
cham so » cham soc, ham so, cham hoi
hieu ve » hieu va, hieu van
cham o » cham soc
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 cac ky tang ma hoi. hieu ve ((cham so) OR (cham o)) ban hanh vi ((cua tre) OR (cau treo))~.
• Adding a wildcard symbol may retrieve word variants: tu cac ky tang ma hoi. hieu ve ((cham so) or (cham o)) ban hanh vi ((cua tre) or (cau treo))*.