Perhaps you should try some spelling variations:
"serie estudios hispanic." » "serie estudios hispanicos.", "serie estudios hispano.", "serie studies hispanic.", "series estudioss hispanic.", "serie studias hispanic.", "serie estados hispanic."
"serie estudio urbano." » "serie estudios urbano.", "serie estudios urbanos.", "serie espacio urbano.", "series estudios urbano.", "serie studia urbano.", "serie estado urbano."
"serie guias urbanos." » "serie parias urbanos.", "serie ruinas urbanas.", "serie buses urbanos."

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: (("serie guias urbanos.") or ((("serie estudio urbano.") or ("serie estudios hispanic."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("serie guias urbanos.") OR ((("serie estudio urbano.") OR ("serie estudios hispanic.")))).
• Removing quotes may allow a broader search: (( serie guias urbanos. ) or ((( serie estudio urbano. ) or ( serie estudios hispanic. )))).
• Adding a wildcard symbol may retrieve word variants: (("serie guias urbanos.") or ((("serie estudio urbano.") or ("serie estudios hispanic."))))*.