Perhaps you should try some spelling variations:
hoang doanh » hang doanh, hoang anh, toan doanh
chieu sang » chieu sach, chieu xanh, hieu lang
hieu xanh » chieu xanh, hieu manh, hieu nganh
doanh cua » doanh luan
dang cong » dung cong
nhung cau » nhung bai, nhu cau
cua dang » cua cong, cua ban
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: doc ((hieu xanh) or (chieu sang)) - hoang doanh cua dang cong tan ((nhung cau) OR (chung cu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu sang)) - hoang doanh cua dang cong tan ((nhung cau) OR (chung cu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (chieu sang)) - hoang doanh cua dang cong tan ((nhung cau) OR (chung cu))".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (chieu sang)) - hoang doanh cua dang cong tan ((nhung cau) OR (chung cu))*.