Perhaps you should try some spelling variations:
ban hang » ngan hang
te sach » toc sach
sach xa » sach dao, sach nha, sach bai
hai cuu » hai cua, hai chu, hai cuc
cam tuc » cam xuc, cam tu, nam thuc
cuu tre » cua tre, cau tren, cau treo
hieu va » lieu va, hieu qua
xa nang » da nang, va nang, xa nong
ma hoi » mai hoi, ma hoa, me hoi
va cam » va cham, va cac, va cao

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach xa nang ((ma hoi) or (xa hoi)). hieu va cam tuc ((ban hang) or (gia thanh)) hai cuu tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach xa nang ((ma hoi) OR (xa hoi)). hieu va cam tuc ((ban hang) OR (gia thanh)) hai cuu tre.
• Adding a wildcard symbol may retrieve word variants: te sach xa nang ((ma hoi) or (xa hoi)). hieu va cam tuc ((ban hang) or (gia thanh)) hai cuu tre*.