Perhaps you should try some spelling variations:
estudioss peruanoss » estudios peruanos
estudios espanoles » estudios espaciales, judios espanoles, estudiantes espanoles
series estudioss » series estudios, serie estudio, serie estudos
estudios urbano » estudios urbanos, estudio urbano, estudios peruanos
seis estudios » los estudios, dos estudios, dios estudios

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 ( seis estudios espanoles. ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((( series estudioss peruanoss. ) OR ( serie estudios urbano. ))) OR ( seis estudios espanoles. )).
• Adding a wildcard symbol may retrieve word variants: (((( series estudioss peruanoss. ) or ( serie estudios urbano. ))) or ( seis estudios espanoles. ))*.