Perhaps you should try some spelling variations:
"series estudioss peruanoss." » "series estudios peruanos.", "series estudios peruanoss.", "serie estudios peruanoss.", "serie estudos peruanoss."
"serie estudio urbanos." » "serie estudio urbano.", "serie estudios urbano.", "serie estudios peruanos.", "serie estudios urbanos.", "series estudios urbanos.", "serie studia urbanos."
"seis estudios urbanos." » "los estudios urbanos.", "dos estudios urbanos.", "dios estudios urbanos."

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 peruanoss.") or ("serie estudio urbanos."))) or ("seis estudios urbanos."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("series estudioss peruanoss.") OR ("serie estudio urbanos."))) OR ("seis estudios urbanos."))*.
• Removing quotes may allow a broader search: (((( series estudioss peruanoss. ) or ( serie estudio urbanos. ))) or ( seis estudios urbanos. ))*.