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
luan dung » lan dung, luan dong, luan hung
dung cong » dung trong
thanh mau » hanh mau, thanh san, thanh hai
cong van » cong vang, cong san, song van
nhanh va » hanh va, nhan va, nhanh ha

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

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