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"
"_ robust e. heilman book" » "_ robust e. german book", "_ robert e. heilman book", "_ robust _. heilman book", "_ robust a. heilman book", "_ robust end. heilman book"
"a robert e. heitmann book" » "3 robert e. heitmann book", "dr robert e. heitmann book", "a robust e. heitmann book", "a robert _. heitmann book", "a robert j. 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. heitmann book") OR ("a robert e. heimann book"))) or ("_ robust e. heilman book"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("a robert e. heitmann book") OR ("a robert e. heimann book"))) OR ("_ robust e. heilman book")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"a robert e. heitmann book\") OR (\"a robert e. heimann book\"))) or (\"_ robust e. heilman book\"))".
• Removing quotes may allow a broader search: (((( a robert e. heitmann book ) OR ( a robert e. heimann book ))) or ( _ robust e. heilman book )).
• Adding a wildcard symbol may retrieve word variants: (((("a robert e. heitmann book") OR ("a robert e. heimann book"))) or ("_ robust e. heilman book"))*.