Perhaps you should try some spelling variations:
"atlas ciencia social. tercera decada." » "atlas ciencias sociales. tercera decada.", "atlas asistencia social. tercera decada.", "otras ciencias social. tercera decada.", "caldas ciencia social. tercera decada.", "las ciencias social. 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.

• Performing a fuzzy search may retrieve terms with similar spellings: (("atlas ciencia social. tercera decada.") or ("las science social. tercera decada."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("atlas ciencia social. tercera decada.") OR ("las science social. tercera decada."))*.
• Removing quotes may allow a broader search: (( atlas ciencia social. tercera decada. ) or ( las science social. tercera decada. ))*.