Perhaps you should try some spelling variations:
"springer springe business model" » "spring spring business model", "springer bridge business model", "springer price business model", "springer single business model", "springer springe business models"
"springer series business model" » "springer services business model", "springer serious business model", "springer server business model", "springer series business models"
"einer finance business model" » "einer finance business models", "einer finanz business model", "vyner finance business model", "greener finance business model"

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: (("einer finance business model") OR ((("springer springe business model") OR ("springer series business model")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"einer finance business model\") or (((\"springer springe business model\") OR (\"springer series business model\"))))".
• Removing quotes may allow a broader search: (( einer finance business model ) or ((( springer springe business model ) OR ( springer series business model )))).
• Adding a wildcard symbol may retrieve word variants: (("einer finance business model") or ((("springer springe business model") OR ("springer series business model"))))*.