Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu manh » hieu nganh, dieu hanh, hien hanh
hanh tang » hanh trang, anh tang, hanh mang
tang luan » dung luan
luan cong » luat cong, luong cong, luan chung
cong cong » cong dong, trong cong, dung cong
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((hieu manh) or (chieu xanh)) - hanh tang luan cong cong dan than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((hieu manh) OR (chieu xanh)) - hanh tang luan cong cong dan than cao.
• Adding a wildcard symbol may retrieve word variants: theo ((hieu manh) or (chieu xanh)) - hanh tang luan cong cong dan than cao*.