Perhaps you should try some spelling variations:
"estudios humanos serie." » "estudios peruanos serie.", "estudios humanisticos serie.", "estudios ensayos serie.", "estudios humanas serie.", "estudios humanos desde.", "estudios urbanos serie."
"estudios urbanos desde." » "estudios urbano desde.", "estudios urbana desde.", "estudios cubanos desde."
"estudios a serie." » "estudios e serie.", "estudios d serie.", "estudios _ serie.", "estudios la serie.", "estudios i serie.", "estudios 2 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 humanos serie.") or ("estudios urbanos desde."))) or ("estudios a serie."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("estudios humanos serie.") OR ("estudios urbanos desde."))) OR ("estudios a serie."))*.
• Removing quotes may allow a broader search: (((( estudios humanos serie. ) or ( estudios urbanos desde. ))) or ( estudios a serie. ))*.