Perhaps you should try some spelling variations:
"world blind working paper" » "world blind docking paper", "world build working paper", "world kind working paper", "world blinded working paper", "world behind working paper", "world being working paper", "world blind working papers"
"world's blind working paper" » "world's blind docking paper", "world's build working paper", "world's kind working paper", "world's bulging working paper", "world's inland working paper", "world's arid working paper", "world's blind working papers"
"world band working paper" » "world bandes working paper", "world board working paper", "world based working paper", "world brand working paper", "world bank working paper", "world bond working paper", "world band working papers"
"world's end working paper" » "world's best working paper", "world's und working paper", "world's 2nd working paper", "world's oecd working paper", "world's end working papers"

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 blind working paper") OR ((("world's blind working paper") OR ("world's end working paper"))))))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"world band working paper\") or (((\"world blind working paper\") or (((\"world's blind working paper\") OR (\"world's end working paper\"))))))*".
• Removing quotes may allow a broader search: (( world band working paper ) or ((( world blind working paper ) or ((( world's blind working paper ) OR ( world's end working paper ))))))*.