Perhaps you should try some spelling variations:
"la ciencies socials. tercera decada." » "la ciencias sociales. tercera decada.", "la ciencia social. tercera decada.", "la ciencas sociales. tercera decada.", "la ciencias socials. tercera decada.", "les ciencies socials. tercera decada.", "la ciencia socials. tercera decada."
"las asistencia social. tercera decada." » "las asistencias social. tercera decada.", "la asistencia social. tercera decada.", "las resistencias social. tercera decada."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("la ciencies socials. tercera decada.") or ("las asistencia social. tercera decada."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("la ciencies socials. tercera decada.") OR ("las asistencia social. tercera decada.")).
• Removing quotes may allow a broader search: (( la ciencies socials. tercera decada. ) or ( las asistencia social. tercera decada. )).
• Adding a wildcard symbol may retrieve word variants: (("la ciencies socials. tercera decada.") or ("las asistencia social. tercera decada."))*.