Perhaps you should try some spelling variations:
development working » development work, development workflow, development within
oecd economics » oecd economies, kcd economics, world economics
working papers » working paper
oecd economic » world economic

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((oecd economics) OR (oecd economic)) development working papers".
• Adding a wildcard symbol may retrieve word variants: ((oecd economics) OR (oecd economic)) development working papers*.