Perhaps you should try some spelling variations:
"motivational scale" » "motivation scale", "motivational social", "motivational states"
"motivational state" » "motivational states", "amotivational state", "motivation state"
"motivational case" » "motivational bases", "motivation case", "motivations case"

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: (((("motivational scale") OR ("motivational case"))) OR ("motivational state")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"motivational scale\") OR (\"motivational case\"))) or (\"motivational state\"))".
• Removing quotes may allow a broader search: (((( motivational scale ) OR ( motivational case ))) or ( motivational state )).
• Adding a wildcard symbol may retrieve word variants: (((("motivational scale") OR ("motivational case"))) or ("motivational state"))*.