Perhaps you should try some spelling variations:
"serie letras de clases." » "serie las de clases.", "serie letras de clase.", "serie letras de bases.", "serie detras de clases."
"serie actas de clases." » "serie fichas de clases.", "serie actas de clase.", "serie actas de bases.", "serie actas del clases.", "serie cartas de clases."
"serie art deco clase." » "serie art de clase.", "serie arte deco clase.", "serie a deco clase.", "serie al deco clase."

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 art deco clase.") or ("serie actas de clases."))) or ("serie letras de clases."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie art deco clase.") OR ("serie actas de clases."))) OR ("serie letras de clases.")).
• Removing quotes may allow a broader search: (((( serie art deco clase. ) or ( serie actas de clases. ))) or ( serie letras de clases. )).
• Adding a wildcard symbol may retrieve word variants: (((("serie art deco clase.") or ("serie actas de clases."))) or ("serie letras de clases."))*.