Perhaps you should try some spelling variations:
"social etats model" » "social ethics model", "social etas model", "social rats model", "social beats model"
"social rates model" » "social rate model", "social states model", "social roles model", "social bates model", "social rats model"
"social rates models" » "social rate models", "social states models", "social roles models", "social rules models", "social bayes models", "social bates models", "social rats models"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("social etats model") OR ((("social rates model") OR ("social rates models")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"social etats model\") or (((\"social rates model\") OR (\"social rates models\"))))".
• Removing quotes may allow a broader search: (( social etats model ) or ((( social rates model ) OR ( social rates models )))).
• Adding a wildcard symbol may retrieve word variants: (("social etats model") or ((("social rates model") OR ("social rates models"))))*.