Perhaps you should try some spelling variations:
doanh ban » doanh bat, doanh van, doanh nhan
va doanh » van doanh, vay doanh, va danh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
van bao » van ban, van dao
truc va » thuc va, thuc vat, trung va
ma hoi » mai hoi, xa hoi, ma hoa
van ba » van ban, van bac, van bau
ban cu » ban cua, ban cau, ban tu
cu tre » cu tren, cua tre, cuu tre

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 nang ma hoi. hieu ((van ba) OR (van bao)) truc va doanh ban cu tre~.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu ((van ba) or (van bao)) truc va doanh ban cu tre*.