Perhaps you should try some spelling variations:
"motivational speaker" » "motivational speakers", "motivational states", "motivational sparc"
"motivational scale" » "motivation scale", "motivational case", "motivational state"
"motivation scene" » "motivation science", "motivation scale", "motivation recent"

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 speaker") OR ((("motivational scale") OR ("motivation scene")))).
• Removing quotes may allow a broader search: (( motivational speaker ) or ((( motivational scale ) or ( motivation scene )))).
• Adding a wildcard symbol may retrieve word variants: (("motivational speaker") or ((("motivational scale") or ("motivation scene"))))*.