Perhaps you should try some spelling variations:
"social self model" » "social self made", "social emf model", "social self modeling"
"social set model" » "social seat model", "social asset model", "social ssl model", "social net model"
"social et modele" » "social e modele", "social etats modele", "social et modeles", "social et moderne", "social et modules"
"social en modele" » "social un modele", "social len modelle", "social len modell"

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