Perhaps you should try some spelling variations:
"springer bridging business model" » "spider bridging business model", "miner bridging business model", "schiller bridging business model", "springer building business model", "springer changing business model", "springer managing business model", "springer bridging business models"
"bridge bridging business model" » "bridge building business model", "bridge changing business model", "bridge managing business model", "bridge bidding business model", "bridging bridging business model", "bridge bridging business models"
"laser science business model" » "laser finance business model", "laser service business model", "laser science using model", "laser science 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: (("laser science business model") OR ((("springer bridging business model") OR ("bridge bridging business model")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"laser science business model\") or (((\"springer bridging business model\") OR (\"bridge bridging business model\"))))".
• Removing quotes may allow a broader search: (( laser science business model ) or ((( springer bridging business model ) OR ( bridge bridging business model )))).
• Adding a wildcard symbol may retrieve word variants: (("laser science business model") or ((("springer bridging business model") OR ("bridge bridging business model"))))*.