Perhaps you should try some spelling variations:
canh doanh » hanh doanh, chinh doanh, doanh doanh
dien sach » dien anh
doanh cua » doanh luan
cua thong » cua thuong, cua khong, cua tong
hoc dien » hoc hien, hoc vien, hoc dieu
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
toan cao » toan ban, toan tap

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

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