Perhaps you should try some spelling variations:
"world basics technical paper" » "world basic technical paper", "world basics techniques paper", "world devices technical paper", "world basics technical papers", "word basics technical paper", "world brics technical paper"
"world banks technical paper" » "world tasks technical paper", "world apis technical paper", "world apps technical paper", "world banks technical papers", "world bank's technical paper", "world bank technical paper", "work banks technical paper"
"world back technical paper" » "world back technical papers", "world bank technical paper", "world pack technical paper", "world rack technical paper", "world black technical paper", "world lack technical paper"
"world jack technical paper" » "world jack technical papers", "world pack technical paper", "world rack technical paper", "world stack technical paper", "world packet technical paper", "world attack 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 back technical paper") OR ("world jack technical paper"))) OR ((("world banks technical paper") OR ("world basics technical paper")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"world back technical paper\") or (\"world jack technical paper\"))) or (((\"world banks technical paper\") OR (\"world basics technical paper\"))))".
• Removing quotes may allow a broader search: (((( world back technical paper ) or ( world jack technical paper ))) or ((( world banks technical paper ) OR ( world basics technical paper )))).
• Adding a wildcard symbol may retrieve word variants: (((("world back technical paper") or ("world jack technical paper"))) or ((("world banks technical paper") OR ("world basics technical paper"))))*.