Perhaps you should try some spelling variations:
"world basics technical paper" » "world basic technical paper", "world basics techniques paper", "world basic technique paper", "word basics technical paper", "world brics technical paper"
"world banks technical paper" » "world tasks technical paper", "world blocks technical paper", "world apis technical paper", "world bank's technical paper", "work banks technical paper", "world back technical paper"
"world jack technical papers" » "world back technical papers", "world rack technical papers", "world stack technical papers", "world java technical papers", "world packet technical papers", "world attack technical papers"
"world pack technical papers" » "world back technical papers", "world rack technical papers", "world stack technical papers", "world packet technical papers", "world peace technical papers", "world place technical papers"
"world bank technical paper" » "world back technical paper", "world lanka technical paper", "world bands technical 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 banks technical paper") OR ("world basics technical paper"))) OR ((("world jack technical papers") OR ("world pack technical papers"))))) OR ("world bank technical paper")).
• Removing quotes may allow a broader search: (((((( world banks technical paper ) or ( world basics technical paper ))) or ((( world jack technical papers ) or ( world pack technical papers ))))) or ( world bank technical paper )).
• Adding a wildcard symbol may retrieve word variants: (((((("world banks technical paper") or ("world basics technical paper"))) or ((("world jack technical papers") or ("world pack technical papers"))))) or ("world bank technical paper"))*.