Perhaps you should try some spelling variations:
"world macro working paper" » "world macros working paper", "world mac working paper", "world manko working paper", "word macro working paper", "world mark working paper", "world macro working papers"
"world make working paper" » "world mode working paper", "world care working paper", "world base working paper", "world made working paper", "world market working paper", "world map working paper", "world make 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 make working paper") OR ("world macro working paper")).
• Removing quotes may allow a broader search: (( world make working paper ) or ( world macro working paper )).
• Adding a wildcard symbol may retrieve word variants: (("world make working paper") or ("world macro working paper"))*.