Perhaps you should try some spelling variations:
"4x400 metres relay" » "4x400 metres rela", "4x400 metres delay", "4x400 metres reay"
"4x400 mestres relay" » "4x400 mestres rela", "4x400 mestres delay", "4x400 mestres reay", "4x400 estres relay", "4x400 mestre relay", "4x400 muestreos relay"
"4x400 metros pelay" » "4x400 metro pelay", "4x400 petros pelay", "4x400 maestros pelay", "4x400 metros pelayo", "4x400 metros pelaya", "4x400 metros play"

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