Perhaps you should try some spelling variations:
local poverty » global poverty, rural poverty
total poverty » global poverty, rural poverty, national poverty
hellman books » german books
_ robust » _ robert
robust e » robust _, robust a, robust end
book » ebook
books » ebooks

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) OR (total poverty)) e. heinemann book ) OR ( _ robust e. hellman books ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((local poverty) OR (total poverty)) e. heinemann book ) or ( _ robust e. hellman books ))~".
• Adding a wildcard symbol may retrieve word variants: (( ((local poverty) OR (total poverty)) e. heinemann book ) or ( _ robust e. hellman books ))*.