Perhaps you should try some spelling variations:
"support grid integration theories." » "support grid integration theory.", "support grid integration through.", "support grid integration efforts.", "support trade integration theories.", "support _ integration theories.", "support data integration theories.", "support agri integration theories.", "support grant integration theories.", "support group integration theories."
"supply social integration series." » "supply global integration series.", "supply financial integration series.", "supply regional integration series.", "supply social integrating services.", "supply social integration schemes.", "supply social integration social."

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("support grid integration theories.") OR ("supply social integration series."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support grid integration theories.\") OR (\"supply social integration series.\"))".
• Removing quotes may allow a broader search: (( support grid integration theories. ) OR ( supply social integration series. )).
• Adding a wildcard symbol may retrieve word variants: (("support grid integration theories.") OR ("supply social integration series."))*.