Perhaps you should try some spelling variations:
"motivational speaker" » "motivational speakers", "motivational scale", "motivationale aspekte"
"motivational states" » "motivational systems", "motivation state", "motivational system", "amotivational states", "motivation states", "motivational scales"
"motivational sparc" » "motivational scale", "motivational story", "motivational speakers"
"motivational state" » "amotivational state", "motivation state", "motivational scale"

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