Perhaps you should try some spelling variations:
doanh ban » doanh bat, doanh van, doanh nhan
sang tao » hang tai
va doanh » van doanh, vay doanh, va danh
tu sach » thu sach, su sach, te sach
sach ky » sac ky, sach y, sach ty
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
ban cua » ban quan
ve cam » ve cham, ve cac, va cam
xuc va » duc va, tuc va, luc va
cua te » cua tu

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: tu sach ky ((nang ma) OR (sang tao)) hoi. hieu ve cam xuc va doanh ban cua te~.
• Adding a wildcard symbol may retrieve word variants: tu sach ky ((nang ma) or (sang tao)) hoi. hieu ve cam xuc va doanh ban cua te*.