Perhaps you should try some spelling variations:
"series estudios peruanos." » "series estudios urbanos.", "series estudios americanos.", "series estudios ensayos.", "serie estudios peruanos.", "seis estudios peruanos.", "tres estudios peruanos."
"series estudios urbano." » "serie estudios urbano.", "seis estudios urbano.", "tres estudios urbano.", "series estudios urbanos.", "series estudio urbano.", "series estudios hispano."
"serret estela hispano." » "serret estilo hispano.", "serret estado hispano."

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: (((("series estudios urbano.") or ("series estudios peruanos."))) or ("serret estela hispano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series estudios urbano.") OR ("series estudios peruanos."))) OR ("serret estela hispano.")).
• Removing quotes may allow a broader search: (((( series estudios urbano. ) or ( series estudios peruanos. ))) or ( serret estela hispano. )).
• Adding a wildcard symbol may retrieve word variants: (((("series estudios urbano.") or ("series estudios peruanos."))) or ("serret estela hispano."))*.