Perhaps you should try some spelling variations:
"supply grid integration theory." » "supply grid integration through.", "supply grid information theory.", "supply grid integration report.", "supply trade integration theory.", "supply _ integration theory.", "supply crowd integration theory.", "support grid integration theory."
"supply data integration series." » "supply data integration theories.", "supply data integrating services.", "supply data integration schemes.", "supply trade integration series.", "supply _ integration series.", "supply data integrity series.", "supply water 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 data integration series."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"supply grid integration theory.\") OR (\"supply data integration series.\"))*".
• Removing quotes may allow a broader search: (( supply grid integration theory. ) OR ( supply data integration series. ))*.