Perhaps you should try some spelling variations:
"estudios humanisticos desde." » "estudios linguisticos desde.", "estudios humanisticos serie.", "estudios humanisticas de.", "estudios humanisticos en."
"estudios americanos jose." » "estudios latinoamericanos jose.", "estudios americano jose.", "estudios americanos joan.", "estudios americanos los.", "estudios emericanos jose.", "estudios dmericanos jose.", "estudios _mericanos jose."
"estudios a series." » "estudios e series.", "estudios d series.", "estudios _ series.", "estudios y series.", "estudios a serie.", "estudios las series."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("estudios americanos jose.") or ("estudios humanisticos desde."))) or ("estudios a series."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("estudios americanos jose.") OR ("estudios humanisticos desde."))) OR ("estudios a series.")).
• Removing quotes may allow a broader search: (((( estudios americanos jose. ) or ( estudios humanisticos desde. ))) or ( estudios a series. )).
• Adding a wildcard symbol may retrieve word variants: (((("estudios americanos jose.") or ("estudios humanisticos desde."))) or ("estudios a series."))*.