Perhaps you should try some spelling variations:
"serie desafio urbanismo." » "serie espacio urbanismo."
"series estudios hispanic." » "series estudios hispanicos.", "series estudios hispano.", "series studies hispanic.", "seis estudios hispanic.", "tres estudios hispanic.", "leyes estudios hispanic."
"serie estudios urbano." » "serie estudios urbanos.", "serie estudio urbano.", "serie estudios peruanos."

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