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

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((( los estudios peruanoss. ) or ( serie estudioss peruanos. ))) or ( series estudios urbanos. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( los estudios peruanoss. ) OR ( serie estudioss peruanos. ))) OR ( series estudios urbanos. )).
• Adding a wildcard symbol may retrieve word variants: (((( los estudios peruanoss. ) or ( serie estudioss peruanos. ))) or ( series estudios urbanos. ))*.