Perhaps you should try some spelling variations:
"oecd economies department working paper" » "oecd economics department working paper", "oecd technologies department working paper", "oecd economies development working paper", "oecd economies departments working paper", "oecd economies department boarding paper", "oecd economies department nursing paper"
"oecd economies department working papers" » "oecd economics department working papers", "oecd technologies department working papers", "oecd economies development working papers", "oecd economies departments working papers", "oecd economies department boarding papers", "oecd economies department nursing papers"
"oecd economic department working paper" » "oecd economics department working paper", "oecd economic debasement working paper", "oecd academic department working paper", "oecd economic departments working paper", "oecd economic department boarding paper", "oecd economic department nursing paper", "world economic department working paper"

Try widening your search to All Fields.

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