Perhaps you should try some spelling variations:
"world banners working paper" » "world bandes working paper", "world manner working paper", "world handlers working paper", "world winners working paper", "world managers working paper", "world bank's working paper", "world banners working papers"
"world brandes working paper" » "world bandes working paper", "world branches working paper", "world ranges working paper", "world brand working paper", "world breaches working paper", "world bank's working paper", "world brandes working papers"
"world band working paper" » "world bandes working paper", "world board working paper", "world based working paper", "world brand working paper", "world bond working paper", "world hand working paper", "world band working papers"
"world bank working paper" » "world black working paper", "world manko working paper", "world pack working paper", "world bank working papers"

Try widening your search to All Fields.

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: (((("world band working paper") OR ("world bank working paper"))) OR ((((("world brandes working paper") OR ("world banners working paper"))) OR ("world brandes working paper")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"world band working paper\") OR (\"world bank working paper\"))) or (((((\"world brandes working paper\") or (\"world banners working paper\"))) or (\"world brandes working paper\"))))".
• Removing quotes may allow a broader search: (((( world band working paper ) OR ( world bank working paper ))) or ((((( world brandes working paper ) or ( world banners working paper ))) or ( world brandes working paper )))).
• Adding a wildcard symbol may retrieve word variants: (((("world band working paper") OR ("world bank working paper"))) or ((((("world brandes working paper") or ("world banners working paper"))) or ("world brandes working paper"))))*.