Perhaps you should try some spelling variations:
nhung cong » thong cong, hang cong, nhung don
hanh doanh » hang doanh, chinh doanh, doanh doanh
hieu xanh » chieu xanh, hieu manh, hieu nganh
doanh cua » doanh luan
dung cong » dung trong
doc hieu » toc thieu, hoc thieu, hoc hien
dan van » dang van, doan van, dao van

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 - hanh doanh cua ((nhung cong) OR (dung cong)) dan van ban~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu xanh - hanh doanh cua ((nhung cong) OR (dung cong)) dan van ban".
• Adding a wildcard symbol may retrieve word variants: doc hieu xanh - hanh doanh cua ((nhung cong) OR (dung cong)) dan van ban*.