Perhaps you should try some spelling variations:
chief economists » chief economist, how economists, women economists
beck modern » beck oder, became modern, become modern
rock modern » rock model, risk modern, work modern
bank chief » beck chief, bank chinese

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