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

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: (( a robert e. ((hermann books) OR (hermann broch)) ) OR ( gal robert b. german book ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( a robert e. ((hermann books) OR (hermann broch)) ) or ( gal robert b. german book ))~".
• Adding a wildcard symbol may retrieve word variants: (( a robert e. ((hermann books) OR (hermann broch)) ) or ( gal robert b. german book ))*.