Perhaps you should try some spelling variations:
hermann brochs » hermann broch
hermann books » german books, hermann broch, demand books
german book » german books, german food
gal robert » hall robert
a robert » 3 robert, dr robert, a robust
robert b » robert e, robert j, robert a

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

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