Perhaps you should try some spelling variations:
"reconciliacion social" » "reconciliacion nacional", "reconciliacion equidad", "reconstruccion social"
"emancipacion social" » "marginacion social", "participacion social", "planificacion social"
"imaginacion social" » "imaginario social", "marginacion social", "imaginaria social"
"validacion social" » "validacion facial", "validacao social", "valoracion social"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("validacion social") or ((((("emancipacion social") OR ("imaginacion social"))) or ("reconciliacion social"))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("validacion social") OR ((((("emancipacion social") OR ("imaginacion social"))) OR ("reconciliacion social")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"validacion social\") or (((((\"emancipacion social\") OR (\"imaginacion social\"))) or (\"reconciliacion social\"))))".
• Removing quotes may allow a broader search: (( validacion social ) or ((((( emancipacion social ) OR ( imaginacion social ))) or ( reconciliacion social )))).
• Adding a wildcard symbol may retrieve word variants: (("validacion social") or ((((("emancipacion social") OR ("imaginacion social"))) or ("reconciliacion social"))))*.