Perhaps you should try some spelling variations:
"series estudioss peruanos." » "series estudios peruanos.", "series estudios urbanos.", "serie estudios peruanos.", "seis estudios peruanos."
"serie estudio urbano." » "serie estudios urbano.", "serie estudios urbanos.", "serie espacio urbano.", "series estudios urbano.", "serie studia urbano."
"serie estado cubano." » "serie estudos cubano.", "serret estado cubano.", "serie estudios cubano."

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

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