Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
dong thanh » truong thanh
cong manh » cong danh, duong manh, cong thanh
tranh va » tranh van, trang va, trinh va
toan cao » toan ban, toan tap
va nang » van nang, da nang, cam nang

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc ((chieu xanh) OR (chieu sach)) - canh tranh va nang ((cong manh) or (dong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc ((chieu xanh) OR (chieu sach)) - canh tranh va nang ((cong manh) OR (dong thanh)) toan cao.
• The words AND, OR and NOT may confuse the search; try adding quotes: "toc ((chieu xanh) OR (chieu sach)) - canh tranh va nang ((cong manh) or (dong thanh)) toan cao".
• Adding a wildcard symbol may retrieve word variants: toc ((chieu xanh) OR (chieu sach)) - canh tranh va nang ((cong manh) or (dong thanh)) toan cao*.