Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
hien sach » kien sach, thien hach, chieu sach
dien sach » dien anh
doanh cua » doanh luan
dong cong » duong cong, dung cong, dang cong
cua dong » chua dong, cua cong, cua dang
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((hien sach) or (dien sach)) - canh doanh cua dong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hien sach) OR (dien sach)) - canh doanh cua dong cong dan than cao*.