Perhaps you should try some spelling variations:
"institutional integration" » "institutional interaction", "institutionelle integration", "institutional interactions"
"multinational operations" » "multinational corporations", "multinational corporation", "multifunctional operation"
"international operations" » "international operators", "international cooperation", "international relations"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("multinational operations") or ("international operations"))) or ("institutional integration"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("multinational operations") OR ("international operations"))) OR ("institutional integration")).
• Removing quotes may allow a broader search: (((( multinational operations ) or ( international operations ))) or ( institutional integration )).
• Adding a wildcard symbol may retrieve word variants: (((("multinational operations") or ("international operations"))) or ("institutional integration"))*.