Perhaps you should try some spelling variations:
"world banks technical paper" » "world basics technical paper", "world blocks technical paper", "world apis technical paper", "world banks technical papers", "world bank's technical paper", "world bank technical paper", "world back technical paper"
"work banks technical paper" » "work basics technical paper", "work blocks technical paper", "work apis technical paper", "work banks technical papers", "work bank technical paper", "work blacks technical paper", "weak banks technical paper"
"work back technical paper" » "work back technical papers", "work bank technical paper", "work pack technical paper", "work rack technical paper", "look back technical paper", "work book technical paper", "network back technical paper"
"work tasks technical paper" » "work tasks technical papers", "work attacks technical paper", "work basics technical paper", "work images technical paper"

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 banks technical paper") OR ((((("work banks technical paper") OR ("work back technical paper"))) OR ("work tasks technical paper")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"world banks technical paper\") or (((((\"work banks technical paper\") OR (\"work back technical paper\"))) or (\"work tasks technical paper\"))))".
• Removing quotes may allow a broader search: (( world banks technical paper ) or ((((( work banks technical paper ) OR ( work back technical paper ))) or ( work tasks technical paper )))).
• Adding a wildcard symbol may retrieve word variants: (("world banks technical paper") or ((((("work banks technical paper") OR ("work back technical paper"))) or ("work tasks technical paper"))))*.