Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, nhieu tang
nhung cong » dung cong, thong cong, hang cong
hieu lang » hieu quang, nhieu tang, hieu van
tranh cua » doanh cua, manh cua
cua nhung » va nhung
cong van » cong vang, cong san, song van
van tuan » van quan, van ban, anh tuan
tuan cao » toan cao, juan cao, quang cao

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: theo ((chieu xanh) OR (((chieu sang) OR (hieu lang)))) - canh tranh cua nhung cong van tuan cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "theo ((chieu xanh) or (((chieu sang) OR (hieu lang)))) - canh tranh cua nhung cong van tuan cao~".
• Adding a wildcard symbol may retrieve word variants: theo ((chieu xanh) or (((chieu sang) OR (hieu lang)))) - canh tranh cua nhung cong van tuan cao*.