Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
thieu xanh » chieu xanh, hieu manh, thien anh
doanh luan » doanh nhan
hoc thieu » toc thieu, hoc hien
luan hoan » luan van
cong dan » cong san, huong dan, cong tac
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 thieu xanh - doanh doanh luan hoan ((((cong dan) OR (cong dong))) or (cong tan)) chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc thieu xanh - doanh doanh luan hoan ((((cong dan) OR (cong dong))) OR (cong tan)) chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc thieu xanh - doanh doanh luan hoan ((((cong dan) OR (cong dong))) or (cong tan)) chan cau".
• Adding a wildcard symbol may retrieve word variants: hoc thieu xanh - doanh doanh luan hoan ((((cong dan) OR (cong dong))) or (cong tan)) chan cau*.