Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, hieu manh
chieu tinh » trieu tinh, lieu tinh, chau tinh
nhung cong » dung cong, thong cong, hang cong
tong cong » trong cong, cong cong, dung cong
tranh ve » trinh ve, thanh ve, tranh va
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: doi ((chieu xanh) or (chieu tinh)) - canh tranh ve ((nhung cong) or (tong cong)) dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chieu xanh) OR (chieu tinh)) - canh tranh ve ((nhung cong) OR (tong cong)) dan van ban.
• Adding a wildcard symbol may retrieve word variants: doi ((chieu xanh) or (chieu tinh)) - canh tranh ve ((nhung cong) or (tong cong)) dan van ban*.