Perhaps you should try some spelling variations:
"ian duncan smith" » "ian duncan sarah", "ian duncan scott", "brian duncan smith", "ra duncan smith", "a duncan smith"
"bruce duncan smith" » "bruce duncan sarah", "bruce duncan scott"
"bruce duncan sir" » "bruce duncan i", "bruce duncan sarah"

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