Perhaps you should try some spelling variations:
"oecd economic department working papers" » "oecd economics department working papers", "oecd economic debasement working papers", "oecd academic department working papers", "oecd economic departments working papers", "oecd economic department boarding papers", "oecd economic department nursing papers"
"oecd economic department building papers" » "oecd economics department building papers", "oecd economic debasement building papers", "oecd academic department building papers", "oecd economic apartment building papers", "oecd economic apartment buildings papers", "oecd economic deployment building papers", "oecd economic department building paper", "oecd economic department building parsers", "oecd economic department building pages"
"oecd economic statement working paper" » "oecd economy statement working paper", "oecd economic sentiment working paper", "oecd economic placement working paper", "oecd economic statements working paper", "oecd economic statement looping paper", "oecd economic statement making paper"

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: (((("oecd economic department working papers") OR ("oecd economic statement working paper"))) OR ("oecd economic department building papers")).
• Removing quotes may allow a broader search: (((( oecd economic department working papers ) or ( oecd economic statement working paper ))) or ( oecd economic department building papers )).
• Adding a wildcard symbol may retrieve word variants: (((("oecd economic department working papers") or ("oecd economic statement working paper"))) or ("oecd economic department building papers"))*.