Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
van doanh » toan doanh, van dong, van thanh
hieu van » hieu va, thien van, lieu va
cac toc » cac toi, cac nuoc, cac thoi
toc van » hoc van, toc san, tac van
van cac » van hac, van cau, van bac
sach ky » sac ky, sach ty, sach kem
lang xa » lang ha, dang xay, lang van
cua tu » cua tuc, cua su, cua te
cua cu » cua chu, cua cau, cua su

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) OR (sach y)) lang xa hoi. hieu van cac toc van doanh dan ((cua tu) OR (cua cu))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te ((sach ky) or (sach y)) lang xa hoi. hieu van cac toc van doanh dan ((cua tu) OR (cua cu))~".
• Adding a wildcard symbol may retrieve word variants: te ((sach ky) or (sach y)) lang xa hoi. hieu van cac toc van doanh dan ((cua tu) OR (cua cu))*.