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

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