Perhaps you should try some spelling variations:
duncan sarah » duncan adam, duncan gray, duncan shaw
ra duncan » _ duncan, mr duncan, j duncan
duncan i » duncan _, duncan c, duncan a
duncan m » duncan _, duncan m.d

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: (( ra duncan sarah ) OR ( j ((duncan i) OR (duncan m)) )).
• Adding a wildcard symbol may retrieve word variants: (( ra duncan sarah ) or ( j ((duncan i) or (duncan m)) ))*.