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