Perhaps you should try some spelling variations:
"estudios linguisticos serie." » "estudio linguistico serie.", "estudio sociolinguistico serie.", "estudios linguistics series.", "estudios linguisticos sobre.", "estudios linguisticos gerado."
"estudios humanos serie." » "estudios urbanos serie.", "estudios peruanos serie.", "estudios humanisticos serie.", "estudios humanas serie.", "estudios humanos desde."
"estudios mayo serie." » "estudios maior serie.", "estudios mas serie.", "estudios enzo 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 linguisticos serie."))) or ("estudios mayo serie."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("estudios humanos serie.") OR ("estudios linguisticos serie."))) OR ("estudios mayo serie.")).
• Removing quotes may allow a broader search: (((( estudios humanos serie. ) or ( estudios linguisticos serie. ))) or ( estudios mayo serie. )).
• Adding a wildcard symbol may retrieve word variants: (((("estudios humanos serie.") or ("estudios linguisticos serie."))) or ("estudios mayo serie."))*.