Perhaps you should try some spelling variations:
"estudios humanos serie." » "estudios urbanos serie.", "estudios peruanos serie.", "estudios humanisticos serie.", "estudios humanas serie.", "estudios humanos desde."
"estudios maior series." » "estudios marcial series.", "estudios nativos series.", "estudios mater series."
"estudio las series." » "estudio la series.", "estudiar las series.", "estudio a series.", "estudio las sedes.", "estudio las especies."

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

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