Perhaps you should try some spelling variations:
"serie cartas de base." » "serie arte de base.", "serie notas de base.", "serie art de base.", "serie carta de base.", "serie cartas de bases."
"serie actas del base." » "serie letras del base.", "serie actas el base.", "serie actas debil base.", "serie actas del baile."
"serie fichas del base." » "serie fichas de base.", "serie flechas del base.", "serie fechas de base.", "serie fichas el base.", "serie fichas debil base.", "serie fichas del baile."

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 cartas de base.") or ((("serie actas del base.") OR ("serie fichas del base."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie cartas de base.") OR ((("serie actas del base.") OR ("serie fichas del base.")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"serie cartas de base.\") or (((\"serie actas del base.\") OR (\"serie fichas del base.\"))))".
• Removing quotes may allow a broader search: (( serie cartas de base. ) or ((( serie actas del base. ) OR ( serie fichas del base. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie cartas de base.") or ((("serie actas del base.") OR ("serie fichas del base."))))*.