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
thu sai » thu tai, thu san, thu ai
duc ban » duc tan, duc van, dua ban
vu cham » va cham, vu kham, tu cham
hieu vu » hieu va, hieu ve, hieu su
cua tre » cua te, cuu tre, cua triet
tang ma » mang may, tang van
tang ha » lang ha, trung ha, tang van
thu hai » thu ha, thu nhap, thu hang
ve cua » le cua, de cua, te cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thu sai) or (thu hai)) ky ((tang ha) or (tang ma)) noi. hieu vu cham duc ban thanh ve cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thu sai) OR (thu hai)) ky ((tang ha) OR (tang ma)) noi. hieu vu cham duc ban thanh ve cua tre.
• Adding a wildcard symbol may retrieve word variants: ((thu sai) or (thu hai)) ky ((tang ha) or (tang ma)) noi. hieu vu cham duc ban thanh ve cua tre*.