Perhaps you should try some spelling variations:
"serie estudios peruanoss." » "serie estudios peruanos.", "serie estudios urbanos."
"series estudios urbano." » "seis estudios urbano.", "tres estudios urbano.", "leyes estudios urbano.", "series estudios urbanos.", "series estudio urbano.", "series estudios peruanos."
"los estudios urbano." » "los estudios urbanos.", "los estudio urbano.", "los estudios peruanos."

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