Perhaps you should try some spelling variations:
"encyclopedia of institutional management" » "encyclopedia of institutional arrangement", "encyclopedia of institutional arrangements", "encyclopedia of international management"
"encyclopedia of operational management" » "encyclopedia of operations management", "encyclopedia of international management", "encyclopedia of educational management"

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

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