Perhaps you should try some spelling variations:
"series estudios hispano." » "serie estudios hispano.", "seis estudios hispano.", "tres estudios hispano."
"serie estado urbano." » "serie estudio urbano.", "serie estado cubano.", "serie estudios urbano.", "serie estudos urbano.", "serret estado urbano."
"dios estudios urbanos." » "dos estudios urbanos.", "los estudios urbanos.", "otros estudios urbanos."

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

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