Perhaps you should try some spelling variations:
"societal effect model" » "societal effects model", "social effects model", "society affect model", "societal effect models", "societal effects models", "societal effective model"
"society effects model" » "social effects model", "safety effects model", "velocity effects model", "society effects models", "society effect models"
"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 effect model") OR ("society effects model")))).
• Removing quotes may allow a broader search: (( social set model ) or ((( societal effect model ) or ( society effects model )))).
• Adding a wildcard symbol may retrieve word variants: (("social set model") or ((("societal effect model") or ("society effects model"))))*.