Perhaps you should try some spelling variations:
quang trung » truong trung
chieu xanh » chieu sach, chieu sang, chieu tinh
quang dung » ung dung, cuong dung
doi chieu » doc hieu, doi chi, ho chieu
cong nam » dong nam, uong nam, thong nam
nam toan » nam tan, tam toan, nam thanh
toan cau » toan cao, toan ban, toan tap

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 tranh ((quang dung) or (quang trung)) cong nam toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu xanh - canh tranh ((quang dung) OR (quang trung)) cong nam toan cau.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - canh tranh ((quang dung) or (quang trung)) cong nam toan cau*.