Perhaps you should try some spelling variations:
cong thang » cong thanh, cang thang, cong thong
hieu xanh » chieu xanh, hieu manh, hieu nganh
doanh hoa » doanh khoa, doanh hoan, danh hoa
cua nhung » va nhung
cong lang » cong vang, cong luong, cong quang
doc hieu » toc thieu, hoc thieu, hoc hien
hoa cua » hoa chat, hoa xuat

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 - doanh hoa cua nhung ((cong lang) or (cong thang)) van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc hieu xanh - doanh hoa cua nhung ((cong lang) OR (cong thang)) van ban.
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - doanh hoa cua nhung ((cong lang) or (cong thang)) van ban*.