Perhaps you should try some spelling variations:
"4x400 mestres relay" » "4x400 mestre relay", "4x400 muestreos relay", "4x400 semestres relay", "4x400 mestres rela", "4x400 mestres delay", "4x400 mestres pelay", "4x400 mestrenos relay"
"4x400 estres relay" » "4x400 estres rela", "4x400 estres delay", "4x400 estres pelay", "4x400 estrenos relay"
"4x400 metres delas" » "4x400 metros delas", "4x400 metres demas", "4x400 metres dela", "4x400 metres degas"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("4x400 mestres relay") OR ("4x400 estres relay"))) OR ("4x400 metres delas"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"4x400 mestres relay\") OR (\"4x400 estres relay\"))) OR (\"4x400 metres delas\"))".
• Removing quotes may allow a broader search: (((( 4x400 mestres relay ) OR ( 4x400 estres relay ))) OR ( 4x400 metres delas )).
• Adding a wildcard symbol may retrieve word variants: (((("4x400 mestres relay") OR ("4x400 estres relay"))) OR ("4x400 metres delas"))*.