Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
dang cong » dung cong
cong danh » cuong danh, cong dan, cong thanh
khi xanh » khia canh, thi anh, thi oanh
thi hanh » thi thanh
cua dang » cua cong, cua ban
toan cao » toan tap
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: doi ((khi xanh) OR (thi hanh)) - hanh tranh cua dang cong danh ((toan cao) OR (toan ban))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((khi xanh) OR (thi hanh)) - hanh tranh cua dang cong danh ((toan cao) or (toan ban))~".
• Adding a wildcard symbol may retrieve word variants: doi ((khi xanh) OR (thi hanh)) - hanh tranh cua dang cong danh ((toan cao) or (toan ban))*.