Perhaps you should try some spelling variations:
hermann book » german book, hermann broch, hermann lohr
gal robert » hall robert
a robust » _ robust
robust e » robust _, robust a, robust end
heilman » heilmann, hellman, helman
ebookss » ebooks
eebookss » eebooks, ebooks
eeebookss » eeebooks, eebooks

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( gal robert _. hermann book ) or ( a robust e. heilman (ebookss or (eebookss OR eeebookss)) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( gal robert _. hermann book ) OR ( a robust e. heilman (ebookss OR (eebookss OR eeebookss)) ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( gal robert _. hermann book ) or ( a robust e. heilman (ebookss or (eebookss OR eeebookss)) ))*".