Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
cong thanh » dong thanh, cong trinh, cong tan
cuong danh » cuon danh, huong dan, cuong linh
tranh cua » doanh cua, manh cua
khi xanh » khia canh, thi hanh, thi anh
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 - hanh tranh cua cong ((cong thanh) OR (cuong danh)) ((toan cao) OR (toan ban))~.
• Adding a wildcard symbol may retrieve word variants: doi khi xanh - hanh tranh cua cong ((cong thanh) or (cuong danh)) ((toan cao) or (toan ban))*.