Perhaps you should try some spelling variations:
"world banks technical paper" » "world tasks technical paper", "world basics technical paper", "world blocks technical paper", "world banks technical papers", "world bank's technical paper", "work banks technical paper", "world books technical paper"
"world back technical paper" » "world back technical papers", "world pack technical paper", "world rack technical paper", "world backup technical paper", "world black technical paper", "world jack technical paper", "world lack technical paper"
"world bank technical paper" » "world bank technical papers", "world lanka technical paper", "world bands technical paper", "world pack technical paper"
"world kpis technical paper" » "world kpis technical papers", "world apis technical paper", "world apps technical paper", "world gis technical paper", "world kris technical paper", "world kids technical paper", "world kim technical paper"

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 banks technical paper") OR ("world back technical paper"))) OR ("world bank technical paper"))) OR ("world kpis technical paper")).
• Removing quotes may allow a broader search: (((((( world banks technical paper ) or ( world back technical paper ))) or ( world bank technical paper ))) or ( world kpis technical paper )).
• Adding a wildcard symbol may retrieve word variants: (((((("world banks technical paper") or ("world back technical paper"))) or ("world bank technical paper"))) or ("world kpis technical paper"))*.