Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
canh trinh » canh tranh, hanh trinh, canh tinh
quang dung » quang trung, cuong dung
doi chieu » doc hieu, doi chi, ho chieu
cong luan » cong tuan, dong luan, cong luong
tong luan » tang luan, dung luan, hang luan
phan cau » phan dau, phan cac, phan tu

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 - canh trinh ((quang dung) or (ung dung)) ((cong luan) OR (tong luan)) phan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - canh trinh ((quang dung) OR (ung dung)) ((cong luan) OR (tong luan)) phan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu xanh - canh trinh ((quang dung) or (ung dung)) ((cong luan) OR (tong luan)) phan cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh trinh ((quang dung) or (ung dung)) ((cong luan) OR (tong luan)) phan cau*.