Perhaps you should try some spelling variations:
thanh thong » thanh thuong, thanh hong, thanh thang
chieu xanh » chieu sach, chieu sang, chieu tinh
cong ngang » cong nhan, cong quang, cong lang
doi chieu » doc hieu, doi chi, mot chieu
cong vang » cong lang, cong quang, cong san
thanh lap » thanh san, phan lap, thanh hai
thong tu » phong tuc, thong tin, thong ke
tu dung » tuc dung, tu duong, su dung

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 xanh - thanh thong tu dung ((cong vang) OR (cong ngang)) thanh lap~".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh thong tu dung ((cong vang) OR (cong ngang)) thanh lap*.