Perhaps you should try some spelling variations:
"a robert e. heimann book" » "a robert e. german book", "3 robert e. heimann book", "dr robert e. heimann book", "a robust e. heimann book", "a robert _. heimann book", "a robert j. heimann book"
"a robert e. hermann book" » "a robert e. german book", "a robert e. hermann broch", "a robert e. hermann lohr", "3 robert e. hermann book", "dr robert e. hermann book", "a robust e. hermann book", "a robert _. hermann book", "a robert j. hermann book"
"_ robust e. heilmann book" » "_ robert e. heilmann book", "_ robust _. heilmann book", "_ robust a. heilmann book", "_ robust end. heilmann book", "_ robust e. heilemann book", "_ robust e. heitmann book", "_ robust e. heilman book"

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("a robert e. heimann book") or ("a robert e. hermann book"))) or ("_ robust e. heilmann book"))~.
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