Perhaps you should try some spelling variations:
"4x400 metros rela" » "4x400 metro rela", "4x400 petros rela", "4x400 maestros rela", "4x400 metros regla", "4x400 metros vela", "4x400 metros dela"
"4x400 muestreos relay" » "4x400 muestreos reglay", "4x400 muestreos velay", "4x400 muestreos delay", "4x400 muestreo relay", "4x400 muestreados relay", "4x400 nuestros relay", "4x400 muestreos reay"
"4x400 estrenos pelay" » "4x400 estreno pelay", "4x400 estrenos pelayo", "4x400 estrenos pelaya", "4x400 estrenos 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 metros rela") OR ((("4x400 muestreos relay") OR ("4x400 estrenos pelay"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"4x400 metros rela\") OR (((\"4x400 muestreos relay\") OR (\"4x400 estrenos pelay\"))))*".
• Removing quotes may allow a broader search: (( 4x400 metros rela ) OR ((( 4x400 muestreos relay ) OR ( 4x400 estrenos pelay ))))*.