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 series." » "supply scale integration services.", "supply scale interaction series.", "supply scale integration server.", "supply care integration series.", "supply soziale integration series.", "supply trade integration series.", "supply case integration series.", "supply scheme integration series.", "supply social integration series."

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