Perhaps you should try some spelling variations:
"brian duncan smith" » "bruce duncan smith", "brian duncan sir", "brian duncan scott", "brjon duncan smith", "brinnes duncan smith"
"ian duncan smith" » "ian duncan sir", "ian duncan scott", "jon duncan smith", "innes duncan smith"
"a duncan smith" » "a duncan sir", "a duncan scott", "ra duncan smith", "_ duncan smith", "j duncan smith"
"a duncan sarah" » "a duncan adam", "a duncan gray", "a duncan shaw", "ra duncan sarah", "_ duncan sarah", "j 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 ("brian duncan smith"))) OR ((("a duncan smith") OR ("a duncan sarah")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"ian duncan smith\") or (\"brian duncan smith\"))) or (((\"a duncan smith\") OR (\"a duncan sarah\"))))".
• Removing quotes may allow a broader search: (((( ian duncan smith ) or ( brian duncan smith ))) or ((( a duncan smith ) OR ( a duncan sarah )))).
• Adding a wildcard symbol may retrieve word variants: (((("ian duncan smith") or ("brian duncan smith"))) or ((("a duncan smith") OR ("a duncan sarah"))))*.