Perhaps you should try some spelling variations:
ban hang » ngan hang
hieu van » hieu va, thien van, lieu va
cua tre » cua te, cuu tre, cua triet
cam duc » cam xuc, cao duc, pham duc
hai cua » thai cua, dai cua, hoi cua
hieu ve » hieu va
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
sac ky » cac ky, sai ky
su sac » su sach, su cac, su xac

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky tang xa hoi. ((hieu ve) OR (hieu van)) cam duc ((ban hanh) OR (ban hang)) hai cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sac ky tang xa hoi. ((hieu ve) OR (hieu van)) cam duc ((ban hanh) OR (ban hang)) hai cua tre*.