Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
doi chieu » doc hieu, doi chi, ho chieu
tranh cua » doanh cua, manh cua
cong cong » cong dong, trong cong, dung cong
cong van » cong vang, cong san, song van
toan cao » toan tap

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 xanh - hanh tranh cua cong cong van ((((toan cao) OR (toan ban))) OR (van ban))~.
• Adding a wildcard symbol may retrieve word variants: doi chieu xanh - hanh tranh cua cong cong van ((((toan cao) or (toan ban))) or (van ban))*.