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

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