Perhaps you should try some spelling variations:
"ian duncan smith" » "ian duncan sir", "a duncan smith", "jon duncan smith", "innes duncan smith"
"ian duncan sarah" » "ian duncan adam", "ian duncan gray", "ian duncan shaw", "a duncan sarah", "jon duncan sarah", "innes duncan sarah"
"brian duncan scott" » "brian duncan scotus", "brian duncan stone", "bra duncan scott", "brjon duncan scott", "brinnes duncan scott"
"bruce duncan scott" » "bruce duncan scotus", "bruce duncan stone"

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