Perhaps you should try some spelling variations:
"serie 31 de malo." » "serie de de malo.", "serie el de malo.", "serie a 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 la de malo." » "serie las de malo.", "serie de de malo.", "serie la de malos.", "serie la de mala.", "serie la de mal.", "serie la fe malo."
"serie 30 de may." » "serie 3 de may.", "serie 100 de may.", "serie de de may.", "serie 30 de mayo.", "serie 30 de maya.", "serie 30 de mal.", "serie 20 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 31 de malo.") OR ("serie la de malo."))) or ("serie 30 de may."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie 31 de malo.") OR ("serie la de malo."))) OR ("serie 30 de may.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"serie 31 de malo.\") OR (\"serie la de malo.\"))) or (\"serie 30 de may.\"))".
• Removing quotes may allow a broader search: (((( serie 31 de malo. ) OR ( serie la de malo. ))) or ( serie 30 de may. )).
• Adding a wildcard symbol may retrieve word variants: (((("serie 31 de malo.") OR ("serie la de malo."))) or ("serie 30 de may."))*.