Perhaps you should try some spelling variations:
"supply crowd integration theory." » "supply crowd integration through.", "supply crowd information theory.", "supply crowd innovation theory.", "supply grid integration theory.", "supply rfid integration theory.", "supply beyond integration theory.", "supply growth integration theory.", "supply cost integration theory.", "supply from integration theory."
"supply crowd irrigation scheme." » "supply crowd irrigation systems.", "supply crop irrigation scheme.", "supply flood irrigation scheme.", "supply from irrigation scheme.", "supply growth irrigation scheme.", "supply cost irrigation scheme."

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("supply crowd integration theory.") or ("supply crowd irrigation scheme."))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("supply crowd integration theory.") OR ("supply crowd irrigation scheme.")).
• Removing quotes may allow a broader search: (( supply crowd integration theory. ) or ( supply crowd irrigation scheme. )).
• Adding a wildcard symbol may retrieve word variants: (("supply crowd integration theory.") or ("supply crowd irrigation scheme."))*.