Perhaps you should try some spelling variations:
"oecd development chapter working papers" » "child development chapter working papers", "based development chapter working papers", "oriented development chapter working papers", "oecd development chapter3 looking papers", "oecd development chapter7 looking papers", "oecd development master working papers"
"oecd development context working paper" » "child development context working paper", "based development context working paper", "oriented development context working paper", "oecd development contexts working paper", "oecd development content working paper", "oecd development contents working paper"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("oecd development chapter working papers") OR ("oecd development context working paper")).
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