Perhaps you should try some spelling variations:
"motivational speaker" » "motivational speakers", "motivational scale", "motivational sparc"
"motivational scales" » "motivational scale", "motivational bases", "motivational goals"
"motivational states" » "motivational systems", "motivation state", "motivational system"

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