Perhaps you should try some spelling variations:
"4x400 metres rela" » "4x400 metros rela", "4x400 metres regla", "4x400 metres vela", "4x400 metres dela"
"4x400 mestres relay" » "4x400 mestres reglay", "4x400 mestres velay", "4x400 mestres delay", "4x400 estres relay", "4x400 mestre relay", "4x400 muestreos relay", "4x400 mestres pelay", "4x400 mestres reay"
"4x400 mestres play" » "4x400 estres play", "4x400 mestre play", "4x400 muestreos play", "4x400 mestres plan"

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