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

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 scott") OR ((("a duncan sir") OR ("a duncan c")))))).
• Removing quotes may allow a broader search: (( ian duncan smith ) or ((( a duncan scott ) or ((( a duncan sir ) or ( a duncan c )))))).
• Adding a wildcard symbol may retrieve word variants: (("ian duncan smith") or ((("a duncan scott") or ((("a duncan sir") or ("a duncan c"))))))*.