Perhaps you should try some spelling variations:
"eleccion sociales class." » "coleccion sociales class.", "eleccion social class.", "seleccion parciales class.", "eleccion sociales clases.", "eleccion sociales las."
"coleccion social basica." » "coleccion sociales basica.", "eleccion social basica.", "coleccion sociedad basica.", "coleccion social basico.", "coleccion social asia.", "coleccion social clasico."
"accion social basica." » "accion social basico.", "accion social asia.", "accion social clasico.", "educacion social basica."

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: (((("coleccion social basica.") or ("eleccion sociales class."))) or ("accion social basica."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("coleccion social basica.") OR ("eleccion sociales class."))) OR ("accion social basica.")).
• Removing quotes may allow a broader search: (((( coleccion social basica. ) or ( eleccion sociales class. ))) or ( accion social basica. )).
• Adding a wildcard symbol may retrieve word variants: (((("coleccion social basica.") or ("eleccion sociales class."))) or ("accion social basica."))*.