Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
lang van » dang van, tang van, hoang van
ta doanh » va doanh, te doanh, ty doanh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
lang xa » lang ha, dang xay
hieu va » lieu va, hieu qua
cac toc » cac toi, cac nuoc, cac thoi
dan cua » dan ca, ban cua, dai cua
toc ta » toc tay, toc thai
cua tu » cua tuc, cua su, cua cu

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: te sach ky ((lang xa) OR (lang van)) hoi. hieu va cac toc ta doanh dan cua tu~.
• Adding a wildcard symbol may retrieve word variants: te sach ky ((lang xa) or (lang van)) hoi. hieu va cac toc ta doanh dan cua tu*.