Perhaps you should try some spelling variations:
local poverty » global poverty, total poverty, rural poverty
poverty a » poverty _, poverty gap, poverty map
a robust » _ robust
robust e » robust _, robert e
heilmann » heimann, heinemann, hermann
book » books, ebook
ebooks » ebookss, eebooks, books, ebook
heitmann » heimann, heinemann, hermann

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( local poverty a. heilmann book ) or ( a robust e. heitmann ebooks ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( local poverty a. heilmann book ) OR ( a robust e. heitmann ebooks ))*.