Perhaps you should try some spelling variations:
doanh dan » doanh ban, doanh van, doanh dao
va doanh » van doanh, vay doanh, va danh
te sach » toc sach
sach ky » sac ky, sach y, sach ty
hieu ve » hieu va, hieu van
cao duc » dao duc, cao suc, giao duc
ma hoi » mai hoi, xa hoi, va hoi
me hoi » le hoi
ve cao » va cao, ve bao, ve cac
ca te » cua te, ca ve, ca me

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) OR (me hoi))) OR (ma hoa)). hieu ve cao duc va doanh dan ca te~.
• Adding a wildcard symbol may retrieve word variants: te sach ky nang ((((ma hoi) or (me hoi))) or (ma hoa)). hieu ve cao duc va doanh dan ca te*.