Perhaps you should try some spelling variations:
doanh dau » danh dau, doan dau, doanh dao
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
vu pham » su pham, vu kham, v pham
thuc va » thuc vat, thuc dan, thuc day
dau cua » dai cua, day cua, cau cua
cua tre » cua te, cuu tre, cua triet
ma hoi » mai hoi, xa hoi, ma hoa

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 ((vu pham) OR (vi pham)) thuc va doanh dau cua tre~.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ma hoi. hieu ((vu pham) or (vi pham)) thuc va doanh dau cua tre*.