Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
nhung cong » dung cong, thong cong, nhung don
hieu xanh » chieu xanh, hieu manh, hieu nganh
hang cong » dang cong, hang nong, bang cong
doc hieu » toc thieu, hoc thieu, hoc hien
doanh va » doan va, doanh tai, doanh cua
tang van » dang van, hoang van, trong van

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

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