Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
thanh tung » thanh cong
cong quang » luong quang, thong quang, duong quang
thanh cham » thanh pham, thanh cha, hanh cham
doi chieu » doc hieu, doi chi, ho chieu
dung cong » dung trong
thang cau » hang cau, thong cau, thanh chau
tung van » trung van, tang van, dung van
van dung » van dong, xay dung, tin dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu xanh - thanh tung van dung cong quang ((thang cau) or (thanh cham))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - thanh tung van dung cong quang ((thang cau) OR (thanh cham)).
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh tung van dung cong quang ((thang cau) or (thanh cham))*.