Perhaps you should try some spelling variations:
"world macros recording paper" » "world macro recorder paper", "world photos recording paper", "world macros recording part", "word macros recording paper", "world across recording paper", "world microbes recording paper", "world marks recording paper", "world macs recording paper"
"world macros working paper" » "world ratios working paper", "world mac working paper", "world machines working paper", "word macros working paper", "world across working paper", "world microbes working paper", "world marks working paper", "world macs working paper"
"world manko working paper" » "world django working paper", "world manner working paper", "world manual working paper", "world many working paper", "world make working paper", "world mark working paper"
"world macro working paper" » "world mac working paper", "world avro working paper", "world across working paper", "word macro working paper", "world mark 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 manko working paper") OR ((("world macro working paper") OR ((("world macros working paper") OR ("world macros recording paper")))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"world manko working paper\") or (((\"world macro working paper\") or (((\"world macros working paper\") OR (\"world macros recording paper\"))))))".
• Removing quotes may allow a broader search: (( world manko working paper ) or ((( world macro working paper ) or ((( world macros working paper ) OR ( world macros recording paper )))))).
• Adding a wildcard symbol may retrieve word variants: (("world manko working paper") or ((("world macro working paper") or ((("world macros working paper") OR ("world macros recording paper"))))))*.