Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, mot chieu
thanh tra » thanh toan, thanh hoa
cong tang » cong thang, cong tan, cong vang
cong lang » cong vang, cong luong, cong quang
tra tran » tra trinh, thai tran, toan tran
quan tam » quan tai, quan am, quan nam

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sang - thanh tra tran quang ((cong tang) OR (cong lang)) quan tam~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh tra tran quang ((cong tang) OR (cong lang)) quan tam*.