Perhaps you should try some spelling variations:
"estudios peruanos desde." » "estudios urbanos desde.", "estudios americanos desde.", "estudios ensayos desde.", "estudios peruanos de.", "estudios peruanos del.", "estudios peruanos jose."
"estudios mas serie." » "estudios maior serie.", "estudios de serie.", "estudios en serie.", "estudios mazas serie.", "estudios las series.", "estudios mayo serie."
"estudios a serie." » "estudios e serie.", "estudios d serie.", "estudios _ serie.", "estudios la serie.", "estudios i serie.", "estudios 2 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 peruanos desde.") or ((("estudios mas serie.") or ("estudios a serie."))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("estudios peruanos desde.") OR ((("estudios mas serie.") OR ("estudios a serie.")))).
• Removing quotes may allow a broader search: (( estudios peruanos desde. ) or ((( estudios mas serie. ) or ( estudios a serie. )))).
• Adding a wildcard symbol may retrieve word variants: (("estudios peruanos desde.") or ((("estudios mas serie.") or ("estudios a serie."))))*.