Perhaps you should try some spelling variations:
art historian » art historians, art historical, a historian
brian dillon » brian hill, brian detlor, brian gill
brian bolton » brian beaton, brian conton, brandt bolton
brian dill » brian hill, brian gill, brian daly

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: ((((brian dillon) OR (brian bolton))) OR (brian dill)) (art historian).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((brian dillon) OR (brian bolton))) or (brian dill)) (art historian)".
• Adding a wildcard symbol may retrieve word variants: ((((brian dillon) OR (brian bolton))) or (brian dill)) (art historian)*.