Perhaps you should try some spelling variations:
"central bankings and their policies" » "central banking and their policies", "central bankers and their policies", "central bank's and their policies", "central bankingings and their policies"
"central banks and their policies" » "central banking and their policies", "central bankings and their policies"
"central bank and their policies" » "central banking and their policies"

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: (("central bank and their policies") OR ((("central banks and their policies") OR ("central bankings and their policies")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"central bank and their policies\") or (((\"central banks and their policies\") OR (\"central bankings and their policies\"))))".
• Removing quotes may allow a broader search: (( central bank and their policies ) or ((( central banks and their policies ) OR ( central bankings and their policies )))).
• Adding a wildcard symbol may retrieve word variants: (("central bank and their policies") or ((("central banks and their policies") OR ("central bankings and their policies"))))*.