Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
hieu van » hieu va, thien van, lieu va
va doanh » van doanh, vay doanh, va danh
ky lang » ky dang, ky tang, tay lang
van cac » van hac, van cau, van bac
cac toc » cac toi, cac nuoc, cac thoi
te sac » te sach, te cac, te san
toc va » hoc va, toc ta, tuc va
cua te » cua tu
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 sac ((ky lang) OR (ky nang)) xa hoi. hieu van cac toc va doanh dan ((cua te) OR (cua cu))~.
• Adding a wildcard symbol may retrieve word variants: te sac ((ky lang) or (ky nang)) xa hoi. hieu van cac toc va doanh dan ((cua te) or (cua cu))*.