Perhaps you should try some spelling variations:
"supply crowd integration theories." » "supply crowd integration theory.", "supply crowd integration through.", "supply crowd integration efforts.", "supply grid integration theories.", "supply trade integration theories.", "supply chain integration theories.", "supply growth integration theories.", "supply cost integration theories.", "supply how integration theories."
"supply green banking services." » "supply free banking services.", "supply open banking services.", "supply green banks services.", "supply urban banking services.", "supply green banking series."

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: (("supply green banking services.") OR ("supply crowd integration theories."))~.
• Removing quotes may allow a broader search: (( supply green banking services. ) or ( supply crowd integration theories. ))~.
• Adding a wildcard symbol may retrieve word variants: (("supply green banking services.") or ("supply crowd integration theories."))*.