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

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("serie estudioss peruanoss.") or ("series estudio urbanos."))) or ("tres estudios urbano."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie estudioss peruanoss.") OR ("series estudio urbanos."))) OR ("tres estudios urbano."))*.
• Removing quotes may allow a broader search: (((( serie estudioss peruanoss. ) or ( series estudio urbanos. ))) or ( tres estudios urbano. ))*.