Perhaps you should try some spelling variations:
hanh doanh » hang doanh, chinh doanh, doanh doanh
doanh luan » doanh nhan
hien xanh » hien hanh, hien nhanh, chieu xanh
luan toan » luan hoan, xuan toan, luan thanh
cong dan » cong san, huong dan, cong dong
cong tan » cong tac, cong san, cong thanh
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc hien xanh - hanh doanh luan toan ((cong dan) OR (cong tan)) chan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh doanh luan toan ((cong dan) OR (cong tan)) chan cau".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh doanh luan toan ((cong dan) OR (cong tan)) chan cau*.