Perhaps you should try some spelling variations:
"support global integration theories." » "support global integration theory.", "support global integration through.", "support global integration reforms.", "support regional integration theories.", "supporting local integration theories."
"support global integration efforts." » "support global international efforts.", "support global conservation efforts.", "support regional integration efforts.", "supporting local 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 global integration theories.") OR ("support global integration efforts."))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"support global integration theories.\") OR (\"support global integration efforts.\"))".
• Removing quotes may allow a broader search: (( support global integration theories. ) OR ( support global integration efforts. )).
• Adding a wildcard symbol may retrieve word variants: (("support global integration theories.") OR ("support global integration efforts."))*.