Perhaps you should try some spelling variations:
thanh phuong » thanh huong, thanh chuong, khanh phong
phuong cham » phuong phap, phuong thao
chieu sang » chieu sach, chieu xanh, hieu lang
doi chieu » doc hieu, doi chi, mot chieu
dung danh » dung doanh, dung dan, cuong danh
dung cong » dung trong
van chat » cao chat
van van » van ban, tan van, san van

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sang - thanh phuong cham ((dung danh) OR (dung cong)) van van chat~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - thanh phuong cham ((dung danh) or (dung cong)) van van chat*.