Perhaps you should try some spelling variations:
"1994 world trotting championships" » "1994 world fighting championship", "1994 world winning championships", "1994 world treating championships", "1994 world trusting championships", "1994 world protecting championships", "1992 world trotting championships", "1995 world trotting championships", "1999 world trotting championships"
"1997 world signing championships" » "1997 world winning championships", "1997 world fighting championship", "1997 world win championships", "1997 world designing championships", "1997 world mining championships", "1992 world signing championships", "1995 world signing championships", "1999 world signing championships"
"1993 world signing championships" » "1993 world winning championships", "1993 world fighting championship", "1993 world win championships", "1993 world designing championships", "1993 world mining 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: (("1994 world trotting championships") OR ((("1997 world signing championships") OR ("1993 world signing championships")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"1994 world trotting championships\") or (((\"1997 world signing championships\") OR (\"1993 world signing championships\"))))".
• Removing quotes may allow a broader search: (( 1994 world trotting championships ) or ((( 1997 world signing championships ) OR ( 1993 world signing championships )))).
• Adding a wildcard symbol may retrieve word variants: (("1994 world trotting championships") or ((("1997 world signing championships") OR ("1993 world signing championships"))))*.