Perhaps you should try some spelling variations:
qua thanh » quan thanh, cua thanh, quang thanh
ban thanh » ban hanh, ban hang
thanh vi » hanh vi, thanh va, thanh ve
qua than » qua phan, qua tan, quan thanh
cua tre » cua te, cua triet, dua tren
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
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: ve cac ky tang ha hoi. hieu ((qua than) OR (qua thanh)) soc ban thanh vi ((cua tre) or (cuu tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ve cac ky tang ha hoi. hieu ((qua than) OR (qua thanh)) soc ban thanh vi ((cua tre) OR (cuu tre))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ve cac ky tang ha hoi. hieu ((qua than) OR (qua thanh)) soc ban thanh vi ((cua tre) or (cuu tre))*".