Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
hanh trinh » canh tranh, hanh chinh
luat chung » luan chung, luat thuong, cua chung
cong thanh » dong thanh, cong trinh, cong tan
cong dan » cong san, cong tan, huong dan
gian van » giang van, gian dan, gian lan

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sang) OR (chieu xanh)) - hanh trinh luat chung ((cong dan) or (cong thanh)) gian van~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu xanh)) - hanh trinh luat chung ((cong dan) OR (cong thanh)) gian van.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (chieu xanh)) - hanh trinh luat chung ((cong dan) or (cong thanh)) gian van".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (chieu xanh)) - hanh trinh luat chung ((cong dan) or (cong thanh)) gian van*.