Perhaps you should try some spelling variations:
"supply crowd integration theory." » "supply crowd integration through.", "supply crowd information theory.", "supply crowd integration report.", "supply grid integration theory.", "supply trade integration theory.", "supply chain integration theory.", "supply growth integration theory.", "supply cost integration theory.", "supply how integration theory."
"supply scale irrigation scheme." » "supply scale irrigation systems.", "supply case irrigation scheme.", "supply scheme irrigation scheme.", "supply social irrigation scheme."

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

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