Perhaps you should try some spelling variations:
chieu sang » chieu xanh, hieu lang, nhieu tang
chieu sach » chinh sach, chiet tach, chieu xanh
cong lang » cong vang, cong luong, cong quang
lang dong » lang trong, lao dong, cong dong
dong cong » duong cong, dung cong, dang cong
vang than » sang than, cang thang, dang thanh
van than » van thanh, van thang, van tuan

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: ho ((chieu sang) OR (chieu sach)) - thanh cong lang dong cong ((vang than) OR (van than)) cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu sang) or (chieu sach)) - thanh cong lang dong cong ((vang than) OR (van than)) cao~".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu sang) or (chieu sach)) - thanh cong lang dong cong ((vang than) OR (van than)) cao*.