Perhaps you should try some spelling variations:
doanh hoan » doanh doanh, doanh khoa, doanh nhan
cong doanh » cong doan, dong doanh, rong doanh
hoc thieu » toc thieu, hoc hien
tai nhung » thai nhung, thi nhung, tai hung
cong danh » cuong danh, cong dan, cong thanh
doc hieu » toc thieu, hoc hien
hoan tai » khoan tai, toan tai, han tai
phan dau » phan tu, hang dau

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: ((doc hieu) OR (hoc thieu)) xanh - doanh hoan tai nhung ((cong doanh) OR (cong danh)) phan dau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((doc hieu) OR (hoc thieu)) xanh - doanh hoan tai nhung ((cong doanh) or (cong danh)) phan dau~".
• Adding a wildcard symbol may retrieve word variants: ((doc hieu) OR (hoc thieu)) xanh - doanh hoan tai nhung ((cong doanh) or (cong danh)) phan dau*.