Perhaps you should try some spelling variations:
qua than » qua thanh, qua phan, qua tan
qua tham » qua cham, qua thanh, quan pham
ban hang » ngan hang
cua tre » cua te, cua triet, dua tren
hang vi » hang va, hanh vi, hang di
soc ban » hoc ban, coc ban, so ban
cuu tre » cau tren, cau treo
ky tang » ky nang, ky dang, kho tang
tang ha » lang ha, tang ma, trung ha
ha hoi » hoa hoi, ha noi, xa hoi
te cac » tu cac, ve cac, te cao

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: te cac ky tang ha hoi. hieu ((qua tham) OR (qua than)) soc ban hang vi ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky tang ha hoi. hieu ((qua tham) or (qua than)) soc ban hang vi ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: te cac ky tang ha hoi. hieu ((qua tham) or (qua than)) soc ban hang vi ((cua tre) OR (cuu tre))*.