Perhaps you should try some spelling variations:
"supply grid integration theory." » "supply grid integration through.", "supply grid information theory.", "supply grid innovation theory.", "supply crowd integration theory.", "supply great integration theory.", "support grid integration theory."
"supply scale integration theory." » "supply scale integration through.", "supply scale information theory.", "supply scale innovation theory.", "supply care integration theory.", "supply soziale integration theory.", "supply trade integration theory.", "supply case integration theory.", "supply scheme integration theory.", "supply social integration theory."

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

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