Perhaps you should try some spelling variations:
"world manner working papers" » "world manager working papers", "world banners working papers", "world inner working papers", "world manned working papers", "world matter working papers", "world anne working papers"
"world macro working paper" » "world macros working paper", "world mac working paper", "world avro working paper", "word macro working paper", "world mark working paper"
"world also working papers" » "world co working papers", "world also making papers", "world also writing 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 also working papers") OR ("world manner working papers"))) OR ("world macro working paper")).
• Removing quotes may allow a broader search: (((( world also working papers ) or ( world manner working papers ))) or ( world macro working paper )).
• Adding a wildcard symbol may retrieve word variants: (((("world also working papers") or ("world manner working papers"))) or ("world macro working paper"))*.