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
te sach » toc sach
sach ky » sac ky, sach y, sach ty
ky lang » ky nang, ky dang, ky tang
lang xa » lang ha, dang xay, lang van
van cac » van hac, van cau, van bac
cac toi » cac thoi
toi va » thoi va, tuoi va, hoi va
cua te » cua tu
cua su » qua 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 lang xa hoi. hieu van cac toi va doanh dan ((cua te) OR (cua su))~.
• Adding a wildcard symbol may retrieve word variants: te sach ky lang xa hoi. hieu van cac toi va doanh dan ((cua te) or (cua su))*.