Perhaps you should try some spelling variations:
"serie estudios peruanoss." » "serie estudios peruanos.", "serie estudios urbanos."
"series estudioss urbano." » "series estudios urbano.", "seis estudios urbano.", "serie estudio urbano.", "series estudios urbanos.", "series estudio urbano."
"serie estado urbanos." » "serie estudios urbanos.", "serie estado cubano.", "serie estudio urbano.", "serie estudio urbanos.", "serie estudos urbanos.", "serret estado urbanos."

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