Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
tang hoa » hang hoa, tang ho, nang hoa
thanh vi » hanh vi, thanh va, thanh ve
qua tham » qua cham, qua thanh, quan pham
qua than » qua thanh, qua phan, qua tan
cua tre » cua te, cuu tre, cua triet
tang ha » lang ha, tang ma, trung ha
soc ban » hoc ban, coc ban, so ban
vi cua » vai cua, di cua
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 hoa) OR (tang ha)) hoi. hieu ((qua tham) OR (qua than)) soc ban thanh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky ((tang hoa) OR (tang ha)) hoi. hieu ((qua tham) or (qua than)) soc ban thanh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: te cac ky ((tang hoa) OR (tang ha)) hoi. hieu ((qua tham) or (qua than)) soc ban thanh vi cua tre*.