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

Try widening your search to All Fields.

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