Perhaps you should try some spelling variations:
"jae roberto e. heilman book" » "jaef roberto e. heilman book", "jose roberto e. heilman book", "jovel roberto e. heilman book", "jae robert e. heilman book", "jae roberto n. heilman book", "jae roberto f. heilman book", "jae roberto e. heilmann book", "jae roberto e. hellman book", "jae roberto e. heilman books", "jae roberto e. heilman ebook"
"a robust _. heitmann eeebookss" » "_ robust _. heitmann eeebookss", "a robust _. heitmann eeebooksss", "a robust _. heitmann eeeebookss", "a robust _. heimann eeebookss", "a robust _. heinemann eeebookss", "a robust _. hermann eeebookss"

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("jae roberto e. heilman book") OR ("a robust _. heitmann eeebookss"))~.
• Removing quotes may allow a broader search: (( jae roberto e. heilman book ) or ( a robust _. heitmann eeebookss ))~.
• Adding a wildcard symbol may retrieve word variants: (("jae roberto e. heilman book") or ("a robust _. heitmann eeebookss"))*.