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