Perhaps you should try some spelling variations:
"coleccion la ciencia social." » "coleccion la ciencias sociales.", "coleccion la science social.", "coleccion la asistencia social.", "coleccion las ciencia social."
"coleccion las science or a science social." » "coleccion years science or a science social.", "coleccion clil science or a science social.", "coleccion las science or _ science social.", "coleccion las science or _ sciences social.", "coleccion las science or el science social."

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

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