Perhaps you should try some spelling variations:
"1997 world treating championships" » "1997 world trotting championships", "1997 world creating champions", "1997 world fighting championship", "1997 world creating championships", "1997 world trading championships", "1997 world setting championships", "1992 world treating championships", "1995 world treating championships", "1999 world treating championships"
"1997 world winning championships" » "1997 world win championships", "1997 world trotting championships", "1997 world fighting championship", "1997 world running championships", "1997 world mining championships", "1997 worth winning championships", "1992 world winning championships", "1995 world winning championships", "1999 world winning championships"
"1993 world signing championships" » "1993 world fighting championship", "1993 world trotting championships", "1993 world win championships", "1993 world designing championships", "1993 world mining championships", "1993 worlds designing championships", "1992 world signing championships"

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: (("1997 world treating championships") OR ((("1997 world winning championships") OR ("1993 world signing championships")))).
• Removing quotes may allow a broader search: (( 1997 world treating championships ) or ((( 1997 world winning championships ) or ( 1993 world signing championships )))).
• Adding a wildcard symbol may retrieve word variants: (("1997 world treating championships") or ((("1997 world winning championships") or ("1993 world signing championships"))))*.