Perhaps you should try some spelling variations:
hermann books » hermann brochs, hermann broch, demand books
heimann book » german book
german books » german book, german food
goal robert » gal robert, deal robert, fogel robert
a robust » _ robust
robust e » robust _, robust a, robust end

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( goal robert _. heimann book ) or ( a robust e. ((hermann books) OR (german books)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( goal robert _. heimann book ) OR ( a robust e. ((hermann books) OR (german books)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( goal robert _. heimann book ) or ( a robust e. ((hermann books) OR (german books)) ))".
• Adding a wildcard symbol may retrieve word variants: (( goal robert _. heimann book ) or ( a robust e. ((hermann books) OR (german books)) ))*.