Perhaps you should try some spelling variations:
"astronomy science business model" » "astronomy space business model", "astronomy ancient business model", "astronomy finance business model", "astronomy service business model", "astronomy science using model", "astronomy science business models"
"springer science business model" » "river science business model", "springer springe business model", "bigger science business model", "springer finance business model", "springer service business model", "springer science using model", "springer science business models"
"stronger science business model" » "stronger finance business model", "stronger service business model", "stronger science using model", "stronger evidence business model", "stronger stance business model", "stronger guidance business model", "stronger 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: (("springer science business model") OR ((("stronger science business model") OR ("astronomy science business model")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"springer science business model\") or (((\"stronger science business model\") OR (\"astronomy science business model\"))))".
• Removing quotes may allow a broader search: (( springer science business model ) or ((( stronger science business model ) OR ( astronomy science business model )))).
• Adding a wildcard symbol may retrieve word variants: (("springer science business model") or ((("stronger science business model") OR ("astronomy science business model"))))*.