Perhaps you should try some spelling variations:
"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."
"las science social. tercera decada." » "las science sociology. tercera decada.", "a science social. tercera decada.", "years science social. tercera decada.", "clil science social. tercera decada."

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"las ciencas socials. tercera decada.\") OR (\"las science social. tercera decada.\"))~".
• Removing quotes may allow a broader search: (( las ciencas socials. tercera decada. ) OR ( las science social. tercera decada. ))~.
• Adding a wildcard symbol may retrieve word variants: (("las ciencas socials. tercera decada.") OR ("las science social. tercera decada."))*.