Perhaps you should try some spelling variations:
"gail robert j. heitmann book" » "gal robert j. heitmann book", "davis robert j. heitmann book", "blair robert j. heitmann book", "gail robert _. heitmann book", "gail robert j. heimann book", "gail robert j. heinemann book", "gail robert j. hermann book", "gail robert j. heitmann books", "gail robert j. heitmann ebook"
"_ robert e. heitmann ebooks" » "_ robert _. heitmann ebooks", "_ robert e. heimann ebooks", "_ robert e. heinemann ebooks", "_ robert e. hermann ebooks", "_ robert e. heitmann ebookss", "_ robert e. heitmann eebooks", "_ robert e. heitmann books", "_ robert e. heitmann ebook"

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("gail robert j. heitmann book") OR ("_ robert e. heitmann ebooks"))~.
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