Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
cong vang » cong quang, cong ngang, cong san
cong lang » cong luong, cong quang, cong ngang
cong dap » cong dan, cong lap, cong da
toan cau » toan cao, toan ban, toan tap

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu sang) OR (chieu sach)) - thanh cong dap ung ((cong vang) OR (cong lang)) toan cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sang) OR (chieu sach)) - thanh cong dap ung ((cong vang) or (cong lang)) toan cau~".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sang) OR (chieu sach)) - thanh cong dap ung ((cong vang) or (cong lang)) toan cau*.