Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
cac thoi » cac toi, cac hop, cac tro
va doanh » van doanh, vay doanh, va danh
hieu van » hieu va, thien van, lieu va
dan cua » dan ca, ban cua, dai cua
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
cac toc » cac toi, cac nuoc
te sac » te sach, te cac
te san » te ban, ke san, tu san
cua te » cua tu

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