Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hieu quang » thieu quang, hieu quan, hieu qua
chung cong » nhung cong, chong cong, phung cong
tranh cua » doanh cua, manh cua
cua chung » cua nhung, luan chung, luat chung
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) or (hieu quang)) - canh tranh cua chung cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (hieu quang)) - canh tranh cua chung cong dan van ban*.