Perhaps you should try some spelling variations:
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"a robert j. hellman book" » "a robert j. hellman joel", "a robert j. german book", "3 robert j. hellman book", "dr robert j. hellman book", "a robot j. hellman book", "a robert _. hellman book"
"a robust b. heilman book" » "a robust b. german book", "_ robust b. heilman book", "a robust _. heilman book", "a robust a. heilman book", "a robust job. heilman book"

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