Perhaps you should try some spelling variations:
"estudios linguisticos desde." » "estudio linguistico desde.", "estudio sociolinguistico desde.", "estudios linguisticas desde.", "estudios linguistica desde.", "estudios linguisticos del."
"estudios urbanos serie." » "estudios humanos serie."
"estudios de serie." » "estudios de series.", "estudios de sergio.", "estudios ice 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 linguisticos desde.") OR ("estudios urbanos serie."))) OR ("estudios de serie."))~.
• Removing quotes may allow a broader search: (((( estudios linguisticos desde. ) or ( estudios urbanos serie. ))) or ( estudios de serie. ))~.
• Adding a wildcard symbol may retrieve word variants: (((("estudios linguisticos desde.") or ("estudios urbanos serie."))) or ("estudios de serie."))*.