Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
qua tham » qua cham, qua thanh, quan pham
qua than » qua thanh, qua phan, qua tan
thanh vi » hanh vi, thanh va, thanh ve
kho tang » cao tang
tang hoa » hang hoa, tang ha, tang ho
soc ban » hoc ban, coc ban, so ban
cua tre » cua te, cuu tre, cua triet
hoa hoi » khoa hoi, hoa hoc, hoa doi
te cao » te bao
vi cua » vai cua, di cua
te cac » tu cac, ve cac, de cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te cac) OR (te cao)) kho tang hoa hoi. hieu ((qua tham) or (qua than)) soc ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te cac) OR (te cao)) kho tang hoa 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) OR (te cao)) kho tang hoa hoi. hieu ((qua tham) or (qua than)) soc ban thanh vi cua tre*".