Perhaps you should try some spelling variations:
"estudios humanisticos serie." » "estudios linguisticos serie.", "estudios humanistica series.", "estudios humanisticos sobre.", "estudios humanisticos en."
"estudios humanos serie." » "estudios urbanos serie.", "estudios peruanos serie.", "estudios ensayos serie.", "estudios humanas serie.", "estudios humanos desde."
"estudios enzo serie." » "estudios en serie.", "estudios e serie.", "estudios etnicos serie.", "estudios mentor serie.", "estudios genero serie."

Try widening your search to All Fields.

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