Perhaps you should try some spelling variations:
"serie estudios americanos." » "serie estudios latinoamericanos.", "serie studias americanos.", "serie estados americanos.", "serie estudoss americanos."
"series estudios hispano." » "seis estudios hispano.", "tres estudios hispano.", "leyes estudios hispano."
"serie estudio urbano." » "serie estudios urbano.", "serie estudios urbanos.", "serie espacio urbano.", "serie studia urbano.", "serie estado urbano.", "serie estudos urbano."

Try widening your search to All Fields.

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

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