Perhaps you should try some spelling variations:
"support trade integration theories." » "support trade integration theory.", "support trade integration through.", "support trade integration reforms.", "export trade integration theories.", "support grant integration theories.", "import trade integration theories."
"supply data integration efforts." » "supply data international efforts.", "supply data conservation efforts.", "supply _ integration efforts.", "supply data integrity efforts.", "supply water integration efforts."

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

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