Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
chieu xanh » chieu sach, chieu sang, chieu tinh
cong quang » luong quang, thong quang, duong quang
hieu xanh » hieu manh, hieu nganh, dieu hanh
doanh cua » doanh luan
cua nhung » va nhung
cong lang » cong vang, cong luong, cong ngang

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 xanh)) - hanh doanh cua nhung ((cong lang) OR (cong quang)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (chieu xanh)) - hanh doanh cua nhung ((cong lang) OR (cong quang)) van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (chieu xanh)) - hanh doanh cua nhung ((cong lang) OR (cong quang)) van ban".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (chieu xanh)) - hanh doanh cua nhung ((cong lang) OR (cong quang)) van ban*.