Perhaps you should try some spelling variations:
duncan scotus » duns scotus
duncan sarah » duncan adam, duncan gray, duncan shaw
duncan scott » duncan stone
ian duncan » brian duncan, a duncan, jon 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 sarah ) OR ( a ((duncan scott) OR (duncan scotus)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ian duncan sarah ) or ( a ((duncan scott) OR (duncan scotus)) ))".
• Adding a wildcard symbol may retrieve word variants: (( ian duncan sarah ) or ( a ((duncan scott) OR (duncan scotus)) ))*.