Perhaps you should try some spelling variations:
"1997 world winning championships" » "1997 world win championships", "1997 world winning relationships", "1997 world mining championships", "1997 world running championships", "1997 world signing championships", "1992 world winning championships", "1993 world winning championships", "1995 world winning championships"
"1994 world trotting championships" » "1994 world treating championships", "1994 world trusting championships", "1994 world protecting championships", "1992 world trotting championships", "1993 world trotting championships", "1995 world trotting championships"
"1997 world fighting championship" » "1997 world lighting championship", "1997 world righting championship", "1997 worth fighting championship", "1992 world fighting championship", "1993 world fighting championship", "1995 world fighting championship"

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: (("1994 world trotting championships") OR ((("1997 world winning championships") OR ("1997 world fighting championship")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"1994 world trotting championships\") or (((\"1997 world winning championships\") OR (\"1997 world fighting championship\"))))".
• Removing quotes may allow a broader search: (( 1994 world trotting championships ) or ((( 1997 world winning championships ) OR ( 1997 world fighting championship )))).
• Adding a wildcard symbol may retrieve word variants: (("1994 world trotting championships") or ((("1997 world winning championships") OR ("1997 world fighting championship"))))*.