Perhaps you should try some spelling variations:
chieu sang » chieu sach, chieu xanh, hieu lang
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
van thanh » ban thanh, van tuan
thanh tap » thanh lap, thanh tai, thanh tay

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 - hanh tranh cua ((nhung cong) OR (han tong)) van thanh tap~.
• Adding a wildcard symbol may retrieve word variants: doi chieu sang - hanh tranh cua ((nhung cong) or (han tong)) van thanh tap*.