Perhaps you should try some spelling variations:
"world networks discussion papers" » "world networks diffusion papers", "world networks session papers", "world networks decision papers", "world networks discussion paper", "world networks discussion panel", "world network discussion papers"
"world workshop discussion part" » "world workshop discussions part", "world workshop session part", "world workshop discussion paper", "3rd workshop discussion part", "world works discussion part", "23rd workshop discussion part"
"oecd workshop discussion part" » "oecd workshop discussions part", "oecd workshop session part", "oecd workshop discussion paper", "second workshop discussion part", "2nd workshop discussion part", "3rd workshop discussion part"

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 networks discussion papers") OR ((("world workshop discussion part") OR ("oecd workshop discussion part")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"world networks discussion papers\") or (((\"world workshop discussion part\") OR (\"oecd workshop discussion part\"))))".
• Removing quotes may allow a broader search: (( world networks discussion papers ) or ((( world workshop discussion part ) OR ( oecd workshop discussion part )))).
• Adding a wildcard symbol may retrieve word variants: (("world networks discussion papers") or ((("world workshop discussion part") OR ("oecd workshop discussion part"))))*.