Perhaps you should try some spelling variations:
goal robert » gal robert, goal poverty
robert j » robert _
a robert » gal robert, a robust
robert e » robert _
book » books, ebook
ebooksss » ebookssss, eebooksss, ebooks
eeebookss » eeebooksss, eeeebookss
heitmann » heimann, heinemann, hartmann

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( goal robert j. hermann book ) or ( a robert e. heitmann ((ebooksss or ebooksss) or eeebookss) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( goal robert j. hermann book ) OR ( a robert e. heitmann ((ebooksss OR ebooksss) OR eeebookss) )).
• Adding a wildcard symbol may retrieve word variants: (( goal robert j. hermann book ) or ( a robert e. heitmann ((ebooksss or ebooksss) or eeebookss) ))*.