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
cong thanh » dong thanh, cong trinh, cong tan
tranh luan » trinh luan, trinh luat, doanh luan
trinh cua » tinh cua, trinh luat, trinh quan
cua nhung » va nhung
cong tac » cong ty

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

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