Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
hanh doanh » hang doanh, chinh doanh, kinh doanh
luan nhung » luan chung, luan hung, quan nhung
hieu manh » chieu xanh, hieu nganh, dieu hanh
cong hoan » cong hoa, dong hoa, cong san
hoc hieu » hoc thieu, hoc hien, doc hieu
cong tan » cong tac, cong san, cong thanh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hieu manh - ((hanh doanh) OR (doanh doanh)) luan nhung ((cong tan) or (cong hoan)) phan tu~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hieu manh - ((hanh doanh) OR (doanh doanh)) luan nhung ((cong tan) OR (cong hoan)) phan tu.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hieu manh - ((hanh doanh) OR (doanh doanh)) luan nhung ((cong tan) or (cong hoan)) phan tu".
• Adding a wildcard symbol may retrieve word variants: hoc hieu manh - ((hanh doanh) OR (doanh doanh)) luan nhung ((cong tan) or (cong hoan)) phan tu*.