Perhaps you should try some spelling variations:
"dos estudio urbanos." » "dos estudios urbanos.", "dos estudio urbano.", "dos estudios peruanos.", "dios estudios urbanos.", "los estudios urbanos."
"artes estudios urbano." » "artes estudios urbanos.", "artes estudio urbano.", "artes estudios peruanos.", "partes estudios urbano.", "arte estudios urbano."
"series estudios hispano." » "serie estudios hispano.", "seis estudios hispano.", "tres estudios hispano.", "series estudios hispana.", "series estudios hispanic."

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

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