Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
hieu nganh » vien nganh, hiem ngan, nghiep nganh
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, dieu hanh, hien hanh
hieu manh » chieu xanh, dieu hanh, hien hanh
doanh cua » doanh luan
cua nhung » va nhung
cong tan » cong tac, cong san, cong thanh
tan van » tran van, tang van, luan 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) or (((hieu nganh) OR (hieu manh)))) - doanh doanh cua nhung cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (((hieu nganh) OR (hieu manh)))) - doanh doanh cua nhung cong tan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doc ((hieu xanh) or (((hieu nganh) OR (hieu manh)))) - doanh doanh cua nhung cong tan van ban".
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (((hieu nganh) OR (hieu manh)))) - doanh doanh cua nhung cong tan van ban*.