Perhaps you should try some spelling variations:
"estudios humanas serie." » "estudios mas serie.", "estudios humanidades serie."
"estudios urbana desde." » "estudios urbano desde.", "estudios urbanos desde.", "estudio urbano desde.", "estudios urbana de.", "estudios urbana del."
"estudios marcial serie." » "estudios marti serie.", "estudios social serie."

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

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