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