Perhaps you should try some spelling variations:
"world workshop discussion papers" » "world workshop discussions papers", "world workshop discussion paper", "world workshop discussion part", "3rd workshop discussion papers", "oecd workshop discussion papers", "23rd workshop discussion papers", "world warshop discussion papers", "world worldhop discussion papers", "world networkshop discussion papers"
"world works discussion panel" » "world work discussion panel", "world words discussion panel", "world workers discussion panel", "world works discussion paper", "world works discussion part", "world wars discussion panel", "world world discussion panel", "world networks discussion panel"
"world workshop session papers" » "world workshop series papers", "3rd workshop session papers", "oecd workshop session papers", "23rd workshop session papers", "world warshop session papers", "world worldhop session papers", "world networkshop session papers"

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: (("world works discussion panel") OR ((("world workshop discussion papers") OR ("world workshop session papers")))).
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• Removing quotes may allow a broader search: (( world works discussion panel ) or ((( world workshop discussion papers ) OR ( world workshop session papers )))).
• Adding a wildcard symbol may retrieve word variants: (("world works discussion panel") or ((("world workshop discussion papers") OR ("world workshop session papers"))))*.