Perhaps you should try some spelling variations:
chieu sang » chieu sach, hieu lang, nhieu tang
chieu xanh » chieu sach, chieu tinh, hieu manh
cong thanh » cong trinh, cong tan, truong thanh
dong thanh » truong thanh
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
toan cao » toan ban, toan tap

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 sang) or (chieu xanh)) - canh tranh cua thong ((cong thanh) OR (dong thanh)) toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu sang) OR (chieu xanh)) - canh tranh cua thong ((cong thanh) OR (dong thanh)) toan cao*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu xanh)) - canh tranh cua thong ((cong thanh) OR (dong thanh)) toan cao*".