Perhaps you should try some spelling variations:
thieu xanh » hieu manh, thien anh, thien danh
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh luan » tranh luan, thanh xuan, thanh tuan
chong cong » cong cong, thong cong, cuong cong
van chong » van chuong, van phong, van cong
khoan cam » khoa cam, khoan va, phan cam
cong dan » cong san, cong tan, huong dan
khan cap » khan ap, than cap, phan cac

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 ((thieu xanh) OR (chieu xanh)) - thanh luan van chong cong dan ((khan cap) OR (khoan cam))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (chieu xanh)) - thanh luan van chong cong dan ((khan cap) or (khoan cam))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (chieu xanh)) - thanh luan van chong cong dan ((khan cap) or (khoan cam))*.