Perhaps you should try some spelling variations:
"series estudioss peruanos." » "series estudios peruanos.", "series estudios urbanos.", "serie estudios peruanos.", "seis estudios peruanos.", "serie estudio peruanos.", "serie estudioss peruanos.", "seis estudioss peruanos.", "tres estudioss peruanos."
"series estudios cubanos." » "series estudios urbanos.", "series estudios urbano.", "series estudios lesbianos.", "serie estudios cubanos.", "seis estudios cubanos.", "tres estudios cubanos."
"serie estudos urbano." » "serie estudios urbano.", "serie estudios urbanos.", "serie estudio urbano.", "serie estado urbano."

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