Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
va doanh » van doanh, vay doanh, va danh
hieu van » hieu va, thien van, lieu va
ky lang » ky nang, ky dang, ky tang
lang ha » long ha
cac tuc » cac tu, cac tac, cac nuoc
cac toc » cac toi, cac nuoc, cac thoi
te sac » te sach, te cac, te san
cua tu » cua tuc, cua su, cua cu
sac ky » cac ky, sai ky
ha hoi » hoa hoi, ha noi, xa hoi

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