Perhaps you should try some spelling variations:
"serie 1 de mayo." » "serie 31 de mayo.", "serie a de mayo.", "serie e de mayo.", "serie 1 de malo.", "serie 1 de mano.", "serie 1 de mayoro.", "serie 11 de mayo.", "serie y de mayo.", "serie _ de mayo."
"Serie 1 de maya." » "Serie 1 de mayta.", "Serie 1 de mayra.", "Serie 1 de masaya.", "Serie 1 de mala.", "Serie 1 de mana.", "Serie 1 de mayora.", "Serie 11 de maya.", "Serie y de maya.", "Serie _ de maya."
"Serie 1 de may." » "Serie 1 de mal.", "Serie 1 de man.", "Serie 1 de mayor.", "Serie 11 de may.", "Serie y de may.", "Serie _ de may."

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("serie 1 de mayo.") or ((("Serie 1 de may.") OR ("Serie 1 de maya."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie 1 de mayo.") OR ((("Serie 1 de may.") OR ("Serie 1 de maya.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"serie 1 de mayo.\") or (((\"Serie 1 de may.\") OR (\"Serie 1 de maya.\"))))".
• Removing quotes may allow a broader search: (( serie 1 de mayo. ) or ((( Serie 1 de may. ) OR ( Serie 1 de maya. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie 1 de mayo.") or ((("Serie 1 de may.") OR ("Serie 1 de maya."))))*.