Perhaps you should try some spelling variations:
"springer service business model" » "springer serie business model", "springer series business model", "spring services business model", "springer service using model"
"springer bridge business model" » "stringer bridge business model", "springer springe business model", "schrodinger bridge business model", "springer bring business model", "springer bridging business model", "springer drive business model"
"springer bridge business models" » "stringer bridge business models", "springer springe business models", "schrodinger bridge business models", "springer bring business models", "springer bridging business models", "springer drive business models"
"sprinkle bridge business model" » "sprinkle bring business model", "sprinkle bridging business model", "sprinkle drive business model", "single bridge 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: (("springer service business model") OR ((((("springer bridge business model") OR ("springer bridge business models"))) OR ("sprinkle bridge business model")))).
• Removing quotes may allow a broader search: (( springer service business model ) or ((((( springer bridge business model ) or ( springer bridge business models ))) or ( sprinkle bridge business model )))).
• Adding a wildcard symbol may retrieve word variants: (("springer service business model") or ((((("springer bridge business model") or ("springer bridge business models"))) or ("sprinkle bridge business model"))))*.