Perhaps you should try some spelling variations:
"serie 31 de malo." » "serie de de malo.", "serie la de malo.", "serie el de malo.", "serie 31 de malos.", "serie 31 de mala.", "serie 31 de mal.", "serie 11 de malo.", "serie 1 de malo.", "serie 21 de malo."
"serie 30 de maya." » "serie 3 de maya.", "serie 100 de maya.", "serie de de maya.", "serie 30 de mayta.", "serie 30 de mayra.", "serie 30 de masaya.", "serie 20 de maya."
"serie 30 de mayo." » "serie 3 de mayo.", "serie 100 de mayo.", "serie de de mayo.", "serie 20 de mayo.", "serie 30 de may."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("serie 31 de malo.") or ((("serie 30 de maya.") OR ("serie 30 de mayo."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie 31 de malo.") OR ((("serie 30 de maya.") OR ("serie 30 de mayo.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"serie 31 de malo.\") or (((\"serie 30 de maya.\") OR (\"serie 30 de mayo.\"))))".
• Removing quotes may allow a broader search: (( serie 31 de malo. ) or ((( serie 30 de maya. ) OR ( serie 30 de mayo. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie 31 de malo.") or ((("serie 30 de maya.") OR ("serie 30 de mayo."))))*.