Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
chiet tach » chieu sach
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua thong » cua thuong, cua khong, cua tong
cong vang » cong quang, cong ngang, cong san
cong lang » cong luong, cong quang, cong ngang
toan cau » 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: theo ((chieu sang) or (chiet tach)) - hanh tranh cua thong ((cong vang) OR (cong lang)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sang) OR (chiet tach)) - hanh tranh cua thong ((cong vang) OR (cong lang)) toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu sang) or (chiet tach)) - hanh tranh cua thong ((cong vang) OR (cong lang)) toan cau".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sang) or (chiet tach)) - hanh tranh cua thong ((cong vang) OR (cong lang)) toan cau*.