Perhaps you should try some spelling variations:
"export day integration reforms." » "export day integration efforts.", "export day integration report.", "export day integration resource.", "export data integration reforms.", "export die integration reforms.", "export der integration reforms."
"supply factors integration theory." » "supply factor integration theory.", "supply facto integration theory.", "supply sector integration theory.", "supply factors integration through.", "supply factors information theory.", "supply factors innovation theory.", "supply functions integration theory."

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

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