Perhaps you should try some spelling variations:
"multifunctional operation" » "multinational operations", "multifunctional transition", "multinational corporation"
"international relations" » "international migration", "international organizations", "international cooperation"
"institutional operation" » "institutional cooperation", "institutions operations", "institutional integration"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("multifunctional operation") or ("international relations"))) or ("institutional operation"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("multifunctional operation") OR ("international relations"))) OR ("institutional operation"))*.
• Removing quotes may allow a broader search: (((( multifunctional operation ) or ( international relations ))) or ( institutional operation ))*.