Perhaps you should try some spelling variations:
thieu xanh » chieu xanh, thien anh, thien danh
hieu manh » chieu xanh, hieu nganh, dieu hanh
hanh bang » anh bang, hanh mang, lanh bang
bang luan » tang luan, hang luan, dung luan
luan tong » luan tuong, luan cong, luan dong
tong cong » trong cong, cong cong, dung cong
cong dan » cong san, cong tan, huong dan

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 (hieu manh)) - hanh bang luan tong cong dan ((toan ban) OR (van ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((thieu xanh) OR (hieu manh)) - hanh bang luan tong cong dan ((toan ban) or (van ban))~".
• Adding a wildcard symbol may retrieve word variants: hoc ((thieu xanh) OR (hieu manh)) - hanh bang luan tong cong dan ((toan ban) or (van ban))*.