Perhaps you should try some spelling variations:
total poverty » global poverty, rural poverty, national poverty
poverty e » poverty _, poverty a, poverty m
a robust » _ robust
heitmann » heimann, heinemann, hermann
book » ebook
books » ebooks
ebooks » eebooks
heilman » heilmann, hellman

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

• Performing a fuzzy search may retrieve terms with similar spellings: (( total poverty e. heitmann book ) or ( a robust _. heilman (books OR ebooks) ))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( total poverty e. heitmann book ) OR ( a robust _. heilman (books OR ebooks) ))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( total poverty e. heitmann book ) or ( a robust _. heilman (books OR ebooks) ))*".