Perhaps you should try some spelling variations:
hanh trinh » canh tranh
hien xanh » hien hanh, hien nhanh, chieu xanh
dang cong » dung cong
cua dang » cua cong, cua ban
cong van » cong vang, cong san, song van
van toan » van tuan, van tan, van thanh
toan cau » toan cao, toan ban, 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: hoc ((hien xanh) OR (dieu hanh)) - ((hanh trinh) OR (hanh chinh)) cua dang cong van toan cau~.
• Adding a wildcard symbol may retrieve word variants: hoc ((hien xanh) or (dieu hanh)) - ((hanh trinh) or (hanh chinh)) cua dang cong van toan cau*.