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

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. heimann book") or ("a robert _. hermann ebook"))) or ("a robust e. heilman book"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("a robert e. heimann book") OR ("a robert _. hermann ebook"))) OR ("a robust e. heilman book")).
• Removing quotes may allow a broader search: (((( a robert e. heimann book ) or ( a robert _. hermann ebook ))) or ( a robust e. heilman book )).
• Adding a wildcard symbol may retrieve word variants: (((("a robert e. heimann book") or ("a robert _. hermann ebook"))) or ("a robust e. heilman book"))*.