Perhaps you should try some spelling variations:
local poverty » global poverty, total poverty, rural poverty
a robust » _ robust
map. » maps.
heitmannn » heitmann, heimann, neitmann
book » books, ebook
ebookss » ebooksss, eebookss
ebooks » ebookss, eebooks
heilmann » heilemann, heimann, heitmann

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: (( local poverty map. heitmannn book ) OR ( a robust _. heilmann (ebookss OR ebooks) ))~.
• Adding a wildcard symbol may retrieve word variants: (( local poverty map. heitmannn book ) or ( a robust _. heilmann (ebookss or ebooks) ))*.