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 serie." » "estudios marcial serie.", "estudios nativos serie.", "estudios maior series.", "estudios mayo serie.", "estudios minor serie."
"estudios enzo serie." » "estudios en serie.", "estudios e serie.", "estudios etnicos serie.", "estudios mentor serie.", "estudios genero serie."

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 enzo serie.") OR ("estudios maior serie."))))~.
• Removing quotes may allow a broader search: (( estudios humanos serie. ) or ((( estudios enzo serie. ) or ( estudios maior serie. ))))~.
• Adding a wildcard symbol may retrieve word variants: (("estudios humanos serie.") or ((("estudios enzo serie.") or ("estudios maior serie."))))*.