Perhaps you should try some spelling variations:
"world bank's technical papers" » "world banks technical papers", "world bands technical papers", "world bank technical papers"
"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 bruce technical paper" » "world reduce technical paper", "world source technical paper", "world azure technical paper", "lord bruce technical paper", "donald bruce 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 basics technical paper") OR ("world bruce technical paper"))) OR ("world bank's technical papers")).
• Removing quotes may allow a broader search: (((( world basics technical paper ) or ( world bruce technical paper ))) or ( world bank's technical papers )).
• Adding a wildcard symbol may retrieve word variants: (((("world basics technical paper") or ("world bruce technical paper"))) or ("world bank's technical papers"))*.