Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
dong quang » duong quang, dang quang, dung quang
thanh cha » thanh ha, thanh nha, thanh phan
tung cua » trung cua, tuong cua, dung cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo ((chieu xanh) OR (chieu sach)) - thanh tung cua cong dong quang ((thanh cha) or (phan tu))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu xanh) OR (chieu sach)) - thanh tung cua cong dong quang ((thanh cha) OR (phan tu)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) OR (chieu sach)) - thanh tung cua cong dong quang ((thanh cha) or (phan tu))".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) OR (chieu sach)) - thanh tung cua cong dong quang ((thanh cha) or (phan tu))*.