Perhaps you should try some spelling variations:
"world banners working paper" » "world manner working paper", "world handlers working paper", "world learners working paper", "world winners working paper", "world managers working paper", "world bank's working paper"
"world brandes working papers" » "world branches working papers", "world ranges working papers", "world flanders working papers", "world brand working papers", "world breaches working papers", "world bank's working papers"
"world bandes working paper" » "world ranges working paper", "world panes working paper", "world branches working paper", "world bank's working paper", "world aedes working paper", "world bandar working paper", "world brandes working paper", "world bankes working paper", "world bondes working paper"
"world band working paper" » "world board working paper", "world based working paper", "world hard working paper", "world brand working paper", "world bank working paper", "world bond working paper"

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (("world band working paper") OR ((((("world bandes working paper") OR ("world banners working paper"))) OR ("world brandes working papers")))).
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