Perhaps you should try some spelling variations:
"specter finance business model" » "sector finance business model", "aspects finance business model", "better finance business model"
"springer single business models" » "springer springe business models", "springer eine business models", "springer silke business models", "springer simple business models", "springer wrangle business models", "springer using business models"
"river science using mobile" » "driven science using mobile", "laser science using mobile", "cyber science using mobile"

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: (((("specter finance business model") OR ("river science using mobile"))) OR ("springer single business models"))*.
• Removing quotes may allow a broader search: (((( specter finance business model ) or ( river science using mobile ))) or ( springer single business models ))*.