Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dung dong » dung cong, vung dong, dung trong
thanh van » thanh toan, thanh phan, thanh nhan
cua dung » cua dang, cua dong, qua dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chinh sach) or (chieu sang)) - hanh tranh cua dung dong ((thanh van) OR (thanh san)) cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chinh sach) OR (chieu sang)) - hanh tranh cua dung dong ((thanh van) OR (thanh san)) cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chinh sach) or (chieu sang)) - hanh tranh cua dung dong ((thanh van) OR (thanh san)) cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chinh sach) or (chieu sang)) - hanh tranh cua dung dong ((thanh van) OR (thanh san)) cau*.