Perhaps you should try some spelling variations:
"springer bridging business model" » "spider bridging business model", "bridge bridging business model", "miner bridging business model", "springer building business model", "springer doing business model", "springer changing business model", "springer bridging business models"
"river science business model" » "river finance business model", "river service business model", "river science using model", "river science business models", "driven science business model", "laser science business model", "cyber science business model"
"springer driving business model" » "springer dublin business model", "springer driven business model", "springer defining business model", "springer doing business model", "springer driving business models"

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