Perhaps you should try some spelling variations:
stronger evidence » strong evidence
springer springe » spring spring, springer series
stronger stance » stronger state, stronger science, stronger cancer
business model » business models
river science » driven science, laser science, cyber science
business mit » business men, business man

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 springe) OR (river science))) OR (((stronger evidence) OR (stronger stance)))) ((business mit) OR (business model)).
• Adding a wildcard symbol may retrieve word variants: ((((springer springe) or (river science))) or (((stronger evidence) or (stronger stance)))) ((business mit) or (business model))*.