Perhaps you should try some spelling variations:
"jae roberto e. hermann books" » "jae roberto e. german books", "jae roberto e. hermann brochs", "jae roberto e. hermann broch", "jaef roberto e. hermann books", "jose roberto e. hermann books", "jovel roberto e. hermann books", "jae robert e. hermann books", "jae roberto n. hermann books", "jae roberto f. hermann books"
"a robert b. heimann ebooks" » "3 robert b. heimann ebooks", "dr robert b. heimann ebooks", "a robust b. heimann ebooks", "a robert _. heimann ebooks", "a robert e. heimann ebooks", "a robert j. heimann ebooks", "a robert b. heimann ebook", "a robert b. heimann redbooks", "a robert b. heimann texbooks"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("jae roberto e. hermann books") or ("a robert b. heimann ebooks"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (("jae roberto e. hermann books") OR ("a robert b. heimann ebooks")).
• Removing quotes may allow a broader search: (( jae roberto e. hermann books ) or ( a robert b. heimann ebooks )).
• Adding a wildcard symbol may retrieve word variants: (("jae roberto e. hermann books") or ("a robert b. heimann ebooks"))*.