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

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

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