Perhaps you should try some spelling variations:
hanh tranh » canh tranh, hanh trinh, hanh trang
bien tinh » bi tinh, yen tinh, diep tinh
tranh va » tranh van, trang va, trinh va
cong dan » cong tan, huong dan, cong tac
cong san » cong tac
toan cau » toan cao, toan ban, toan tap
ho bien » pho bien, hoa bien, so bien

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ho bien tinh - hanh tranh va nhung ((((cong dan) or (cong dong))) or (cong san)) toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho bien tinh - hanh tranh va nhung ((((cong dan) OR (cong dong))) OR (cong san)) toan cau.
• Adding a wildcard symbol may retrieve word variants: ho bien tinh - hanh tranh va nhung ((((cong dan) or (cong dong))) or (cong san)) toan cau*.