Perhaps you should try some spelling variations:
van doanh » toan doanh, van dong, van thanh
hang tai » hang va, dung tai
hoc sach » hoc sinh, hoc cac, hoc anh
sach ky » sac ky, sach y, sach ty
sang ma » tang ma, nang ma, sang tao
hieu va » lieu va, hieu qua
cam luc » cam xuc, cau luc
luc van » luoc van, luu van, duc van
cuc tre » duc tre, cua tre, cuu tre
va cam » va cham, va cac, va cao

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 (hang tai)) hoi. hieu va cam luc van doanh tai cuc tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc sach ky ((sang ma) OR (hang tai)) hoi. hieu va cam luc van doanh tai cuc tre.
• Adding a wildcard symbol may retrieve word variants: hoc sach ky ((sang ma) or (hang tai)) hoi. hieu va cam luc van doanh tai cuc tre*.