Perhaps you should try some spelling variations:
duncan smith » duncan sarah, duncan sir, duncan scott
ian duncan » brian duncan, jon duncan, innes duncan
ra duncan » _ duncan, mr duncan, j duncan
a duncan » _ duncan, j duncan, m duncan

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: (( ian duncan smith ) OR ( ((a duncan) OR (ra duncan)) smith )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ian duncan smith ) or ( ((a duncan) OR (ra duncan)) smith ))".
• Adding a wildcard symbol may retrieve word variants: (( ian duncan smith ) or ( ((a duncan) OR (ra duncan)) smith ))*.