Perhaps you should try some spelling variations:
"estudios cubanos desde." » "estudios urbano desde.", "estudios lesbianos desde.", "estudios peruanos desde.", "estudios humanos desde.", "estudios cubana desde.", "estudios cubanos de."
"estudios maior series." » "estudios marcial series.", "estudios nativos series.", "estudios mater series."
"estudios urbanos desde." » "estudios urbano desde.", "estudios urbana desde.", "estudios urbanos de."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("estudios urbanos desde.") OR ("estudios cubanos desde."))) or ("estudios maior series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("estudios urbanos desde.") OR ("estudios cubanos desde."))) OR ("estudios maior series.")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"estudios urbanos desde.\") OR (\"estudios cubanos desde.\"))) or (\"estudios maior series.\"))".
• Removing quotes may allow a broader search: (((( estudios urbanos desde. ) OR ( estudios cubanos desde. ))) or ( estudios maior series. )).
• Adding a wildcard symbol may retrieve word variants: (((("estudios urbanos desde.") OR ("estudios cubanos desde."))) or ("estudios maior series."))*.