Perhaps you should try some spelling variations:
vay doanh » van doanh, ly doanh, voi doanh
doanh ban » doanh bat, doanh van, doanh nhan
tang van » dang van, hoang van, trong van
hieu van » hieu va, thien van, lieu va
van pham » san pham, van phan, van phat
te sach » toc sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay, lang van
duc vay » duc va, duc van, duc vy
ban cua » ban quan
cua tre » cua te, cuu tre, cua triet

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ky ((lang xa) or (tang van)) hoi. hieu van pham duc vay doanh ban cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky ((lang xa) OR (tang van)) hoi. hieu van pham duc vay doanh ban cua tre.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((lang xa) or (tang van)) hoi. hieu van pham duc vay doanh ban cua tre*.