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