Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
doanh luan » doanh nhan
hieu manh » chieu xanh, hieu nganh, hien hanh
hang cong » hang nong, bang cong, thanh cong
dang cong » dung cong
manh toan » thanh toan, anh tuan, tinh toan
toan cau » toan cao, toan ban, toan tap

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) OR (dieu hanh)) - doanh doanh luan ((hang cong) or (dang cong)) manh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((hieu manh) OR (dieu hanh)) - doanh doanh luan ((hang cong) OR (dang cong)) manh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((hieu manh) OR (dieu hanh)) - doanh doanh luan ((hang cong) or (dang cong)) manh toan cau".
• Adding a wildcard symbol may retrieve word variants: hoc ((hieu manh) OR (dieu hanh)) - doanh doanh luan ((hang cong) or (dang cong)) manh toan cau*.