Perhaps you should try some spelling variations:
"serie estudios peruanos." » "serie estudios urbanos.", "serie estudios americanos.", "serie estudios ensayos."
"series estudioss urbano." » "seis estudios urbano.", "serie estudio urbano.", "serie estudos urbano.", "series estudios urbanos.", "series estudio urbano.", "seis estudioss urbano.", "tres estudioss urbano.", "leyes estudioss urbano."
"series estudios urbano." » "seis estudios urbano.", "tres estudios urbano.", "leyes estudios urbano.", "series estudios urbanos.", "series estudio urbano.", "series estudios 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 estudioss urbano.") or ("serie estudios peruanos."))) or ("series estudios urbano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series estudioss urbano.") OR ("serie estudios peruanos."))) OR ("series estudios urbano.")).
• Removing quotes may allow a broader search: (((( series estudioss urbano. ) or ( serie estudios peruanos. ))) or ( series estudios urbano. )).
• Adding a wildcard symbol may retrieve word variants: (((("series estudioss urbano.") or ("serie estudios peruanos."))) or ("series estudios urbano."))*.