Perhaps you should try some spelling variations:
"a robert e. hermann book" » "gal robert e. hermann book", "a robust e. hermann book", "a robert j. hermann book", "a robert e. hermann books"
"a robert _. hermann book" » "gal robert _. hermann book", "a robust _. hermann book", "a robert _. hermann books"
"a robert b. heimann ebook" » "gal robert b. heimann ebook", "a robust b. heimann ebook", "a robert j. heimann ebook", "a robert a. heimann ebook", "a robert b. heimann ebooks", "a robert b. heinemann ebook"

Try widening your search to All Fields.

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 e. hermann book") OR ("a robert _. hermann book"))) or ("a robert b. heimann ebook"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("a robert e. hermann book") OR ("a robert _. hermann book"))) OR ("a robert b. heimann ebook")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"a robert e. hermann book\") OR (\"a robert _. hermann book\"))) or (\"a robert b. heimann ebook\"))".
• Removing quotes may allow a broader search: (((( a robert e. hermann book ) OR ( a robert _. hermann book ))) or ( a robert b. heimann ebook )).
• Adding a wildcard symbol may retrieve word variants: (((("a robert e. hermann book") OR ("a robert _. hermann book"))) or ("a robert b. heimann ebook"))*.