Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
doi chieu » doc hieu, doi chi, mot chieu
cong gian » chong gian, con gian, cong giao
gian dan » gian lang
dan dung » van dung, tin dung, ap dung
dung tan » dung toan, duong tan, dung tai
tran cau » tran chau, toan cau, ran cau

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

• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - thanh cong gian dan dung tan tran cau*.