Perhaps you should try some spelling variations:
social effects » special effects, social aspects
effects models » effect models
social etats » social ethics
etats model » etas model, rats model, beats model
social jet » social je, social act, social jetlag
jet model » net model, set model

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 jet model ) OR ( social etats model ))) OR ( social effects models )).
• Adding a wildcard symbol may retrieve word variants: (((( social jet model ) or ( social etats model ))) or ( social effects models ))*.