Perhaps you should try some spelling variations:
luan chung » luan chinh
hien xanh » hien hanh, hien nhanh, chieu xanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
cong dan » cong tan, huong dan, cong dong
cong san » cong tac
chan cau » phan cau, chinh cau, nhanh cau
can cau » van cau, ban cau, ca 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 tang luan chung ((cong dan) or (cong san)) ((chan cau) OR (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc hien xanh - hanh tang luan chung ((cong dan) OR (cong san)) ((chan cau) OR (can cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc hien xanh - hanh tang luan chung ((cong dan) or (cong san)) ((chan cau) OR (can cau))".
• Adding a wildcard symbol may retrieve word variants: hoc hien xanh - hanh tang luan chung ((cong dan) or (cong san)) ((chan cau) OR (can cau))*.