Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh hai » thanh phan, thanh hoa, thanh san
cam duc » cam xuc, cao duc, pham duc
hai cua » thai cua, dai cua, hoi cua
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu van
hieu va » lieu va, hieu qua
duc ban » duc tan, duc van, dua ban
su cac » su cao, su can, eu cac
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) OR (tu cac)) ky tang xa hoi. ((hieu ve) OR (hieu va)) cam duc ban thanh hai cua te~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su cac) OR (tu cac)) ky tang xa hoi. ((hieu ve) or (hieu va)) cam duc ban thanh hai cua te~".
• Adding a wildcard symbol may retrieve word variants: ((su cac) OR (tu cac)) ky tang xa hoi. ((hieu ve) or (hieu va)) cam duc ban thanh hai cua te*.