Perhaps you should try some spelling variations:
22structural adjustment » structural adjustments, structure adjustment, structural adjustmenton
economics policy » economics policies, economics public, economics political
30 development » 10 development, 20 development, 10 developments
2f developing » f developing, 7 developing, self developing
30 developing » 10 developing, 20 developing

Try widening your search to All Fields.

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: %((22structural adjustment) OR (structural adjustment)) %((economics policy) OR (economic policy))%29 %((2f developing) OR (((30 developing) OR (30 development)))) countries%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((22structural adjustment) or (structural adjustment)) %((economics policy) or (economic policy))%29 %((2f developing) or (((30 developing) OR (30 development)))) countries%22".
• Adding a wildcard symbol may retrieve word variants: %((22structural adjustment) or (structural adjustment)) %((economics policy) or (economic policy))%29 %((2f developing) or (((30 developing) OR (30 development)))) countries%22*.