Perhaps you should try some spelling variations:
chief economists » chief economist, how economists, women economists
modern economic » models economic, modeling economic, foreign economic
modern economy » open economy, modern astronomy
bank chief » beck chief, bank chinese
world beck » world back, world black, world best

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 bank chief economists ) OR ( world beck ((modern economic) OR (modern economy)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( world bank chief economists ) or ( world beck ((modern economic) OR (modern economy)) ))".
• Adding a wildcard symbol may retrieve word variants: (( world bank chief economists ) or ( world beck ((modern economic) OR (modern economy)) ))*.