Perhaps you should try some spelling variations:
"societal effective model" » "societal effects model", "social affective model", "societal effect model"
"society effects model" » "social effects model", "safety effects model", "velocity effects model", "society effect models"
"society effects models" » "social effects models", "safety effects models", "velocity effects models", "society effect models", "society effect modelss"
"social set model" » "social seat model", "social asset model", "social self model", "social net model"

Try widening your search to All Fields.

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 set model") OR ((("societal effective model") OR ((("society effects model") OR ("society effects models")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"social set model\") or (((\"societal effective model\") or (((\"society effects model\") OR (\"society effects models\"))))))".
• Removing quotes may allow a broader search: (( social set model ) or ((( societal effective model ) or ((( society effects model ) OR ( society effects models )))))).
• Adding a wildcard symbol may retrieve word variants: (("social set model") or ((("societal effective model") or ((("society effects model") OR ("society effects models"))))))*.