Perhaps you should try some spelling variations:
hermann books » german books, hermann brochs, hermann broch
gal robert » hall robert
a robust » _ robust
robust b » robust _, robust a, robust job
robert e » robert _, robert j
heilmann » heilemann, heimann, heitmann
doris » boris

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( a robust b. hermann books ) or ( gal robert e. heilmann doris ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( a robust b. hermann books ) OR ( gal robert e. heilmann doris ))*.