Perhaps you should try some spelling variations:
hermann books » hermann brochs, hermann broch, demand books
fogel robert » jovel roberto, fimbel robert, wrobel robert
heimann book » german book
german books » german book, german food
robust end » robust read, robust bound
a robust » _ robust

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( fogel robert _. heimann book ) or ( a robust end. ((hermann books) or (german books)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( fogel robert _. heimann book ) OR ( a robust end. ((hermann books) OR (german books)) )).
• Adding a wildcard symbol may retrieve word variants: (( fogel robert _. heimann book ) or ( a robust end. ((hermann books) or (german books)) ))*.