Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
hieu nganh » vien nganh, hiem ngan, hieu manh
doanh luan » doanh nhan
luan nhung » luan chung, luan hung, quan nhung
nhung cong » dung cong, thong cong, hang cong
hieu xanh » chieu xanh, hieu manh, dieu hanh
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)) - doanh doanh luan nhung cong tan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doc ((hieu xanh) OR (hieu nganh)) - doanh doanh luan nhung cong tan van ban.
• Adding a wildcard symbol may retrieve word variants: doc ((hieu xanh) or (hieu nganh)) - doanh doanh luan nhung cong tan van ban*.