Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
qua tham » qua cham, qua than, qua thanh
thanh vi » hanh vi, thanh va, thanh ve
tham coc » kham cuoc, tham nuoc, tham hoa
cua tre » cua te, cuu tre, cua triet
tang ha » lang ha, trung ha, tang van
coc ban » co ban, cac ban, hoc ban
tang ma » mang may, tang van
vi cua » vai cua, di cua
te cac » tu cac, te cao, de cac
ve cac » va cac, vien 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 (ve cac)) ky ((tang ha) or (tang ma)) hoi. hieu qua tham coc ban thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te cac) OR (ve cac)) ky ((tang ha) OR (tang ma)) hoi. hieu qua tham coc ban thanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te cac) OR (ve cac)) ky ((tang ha) or (tang ma)) hoi. hieu qua tham coc ban thanh vi cua tre*".