Perhaps you should try some spelling variations:
tranh quang » tran quang, trinh quang, tinh quang
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
quang dung » quang trung, ung dung, cuong dung
cong san » cong tac
chan cau » phan cau, can cau, chinh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) OR (chieu tinh)) - canh tranh quang dung ((cong dong) or (cong san)) chan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu tinh)) - canh tranh quang dung ((cong dong) OR (cong san)) chan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu tinh)) - canh tranh quang dung ((cong dong) or (cong san)) chan cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu tinh)) - canh tranh quang dung ((cong dong) or (cong san)) chan cau*.