Perhaps you should try some spelling variations:
peter bray » peter brady, peter brian, peter bratt
peter read » peter reid, paper read, ever read
peter graf » peter grant
peter ray » peter rae, peter ravn, peter ryan

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: ((((peter bray) OR (((peter ray) OR (peter read))))) OR (peter graf)) (bioengineer).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((peter bray) or (((peter ray) OR (peter read))))) or (peter graf)) (bioengineer)".
• Adding a wildcard symbol may retrieve word variants: ((((peter bray) or (((peter ray) OR (peter read))))) or (peter graf)) (bioengineer)*.