Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
cong ngang » cong nhan, cong quang, cong lang
theo hieu » theo chieu, theo tieu, thien hieu
hieu lang » chieu sang, hieu quang, nhieu tang
tranh cua » doanh cua, manh cua
dung cong » dung trong
cua dung » cua dang, cua dong, qua dung
toan cau » toan cao, toan tap, toan tai
toan ban » van ban

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 hieu lang - hanh tranh cua dung cong ngang ((toan cau) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: theo hieu lang - hanh tranh cua dung cong ngang ((toan cau) or (toan ban))*.