Perhaps you should try some spelling variations:
thieu sach » chieu sach, thien hach, hieu cach
canh doanh » hanh doanh, chinh doanh, doanh doanh
hoc thieu » toc thieu, hoc hien
doanh cua » doanh luan
tran tuan » tran xuan, tran quang, tran thanh
cua dong » chua dong, cua cong, cua dang
cong tac » cong ty

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: hoc thieu sach - canh doanh cua dong ((cong san) OR (cong tac)) tran tuan~.
• Adding a wildcard symbol may retrieve word variants: hoc thieu sach - canh doanh cua dong ((cong san) or (cong tac)) tran tuan*.