Perhaps you should try some spelling variations:
ban thanh » ban hanh, ban hang
thanh ve » hanh ve, thanh va, thanh vien
cham duc » pham duc, cham soc, pham duy
tang van » dang van, hoang van, trong van
thu sai » thu hai, thu tai, thu san
hieu ve » hieu va, hieu van
duc ban » duc tan, duc van, dua ban
cua tre » cua te, cuu tre, cua triet
hieu vu » hieu va, hieu su, dieu vu
tang ha » lang ha, tang ma, trung ha
sai ky » sac ky
ve cua » le cua, de cua, te cua

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: thu sai ky ((tang ha) OR (tang van)) noi. ((hieu vu) OR (hieu ve)) cham duc ban thanh ve cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "thu sai ky ((tang ha) or (tang van)) noi. ((hieu vu) OR (hieu ve)) cham duc ban thanh ve cua tre~".
• Adding a wildcard symbol may retrieve word variants: thu sai ky ((tang ha) or (tang van)) noi. ((hieu vu) OR (hieu ve)) cham duc ban thanh ve cua tre*.