Perhaps you should try some spelling variations:
"les ciencies socials. tercera decada." » "les ciencias sociales. tercera decada.", "les ciencia social. tercera decada.", "les ciencas sociales. tercera decada.", "las ciencias socials. tercera decada.", "les audiencies socials. tercera decada."
"las ciencas socials. tercera decada." » "las ciencas sociales. tercera decada.", "las ciencias sociales. tercera decada.", "las cienicas sociales. tercera decada.", "las ciencias socials. tercera decada.", "las cuencas socials. tercera decada.", "las fincas socials. tercera decada."

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: (("las ciencas socials. tercera decada.") or ("les ciencies socials. tercera decada."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("las ciencas socials. tercera decada.") OR ("les ciencies socials. tercera decada.")).
• Removing quotes may allow a broader search: (( las ciencas socials. tercera decada. ) or ( les ciencies socials. tercera decada. )).
• Adding a wildcard symbol may retrieve word variants: (("las ciencas socials. tercera decada.") or ("les ciencies socials. tercera decada."))*.