Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
sang tao » hang tai
hoc sach » hoc sinh, hoc cac, hoc anh
sach ky » sac ky, sach y, sach ty
sang ma » tang ma, nang ma, mang may
qua cac » cua cac
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, vuc van
cuc tre » duc tre, cua tre, cuu tre

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: hoc sach ky ((sang ma) or (sang tao)) hoi. hieu qua cac xuc van doanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky ((sang ma) OR (sang tao)) hoi. hieu qua cac xuc van doanh tai cuc tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky ((sang ma) or (sang tao)) hoi. hieu qua cac xuc van doanh tai cuc tre*.