Perhaps you should try some spelling variations:
"series estudioss americanos." » "series estudios americanos.", "series estados americanos.", "series estudios africanos.", "serie estudios americanos.", "seis estudios americanos."
"serie estudio urbanos." » "serie estudios urbanos.", "serie estudio urbano.", "serie estudios urbano.", "series estudios urbanos.", "serie estado urbanos."
"serie studia urbanos." » "serie estudios urbanos.", "serie estudio urbano."

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 urbanos.") or ("serie studia urbanos."))) or ("series estudioss americanos."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("serie estudio urbanos.") OR ("serie studia urbanos."))) OR ("series estudioss americanos."))*.
• Removing quotes may allow a broader search: (((( serie estudio urbanos. ) or ( serie studia urbanos. ))) or ( series estudioss americanos. ))*.