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

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