Perhaps you should try some spelling variations:
"springer series business learning" » "springer series business planning", "springer series business training", "springer series business lending", "springer services business learning", "springer serious business learning", "springer server business learning"
"river finance business media" » "river finance business mexico", "river finance business model", "river finance business men", "driven finance business media", "river france business media", "einer finance business media"

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: (("springer series business learning") OR ("river finance business media")).
• Removing quotes may allow a broader search: (( springer series business learning ) or ( river finance business media )).
• Adding a wildcard symbol may retrieve word variants: (("springer series business learning") or ("river finance business media"))*.