Perhaps you should try some spelling variations:
"world basics techniques paper" » "world basic techniques paper", "world basic technique paper", "world based techniques paper", "world basics techniques upper", "world basics techniques peter", "world basics techniques pattern", "word basics techniques paper", "world brics techniques paper"
"world basics technical paper" » "world basic technical paper", "world devices technical paper", "world basic technique 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", "work banks technical paper", "world back technical paper"
"world bank technical paper" » "world bank technical papers", "world lanka technical paper", "world bands technical paper", "world pack 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 basics techniques paper"))))) OR ("world bank technical paper")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"world banks technical paper\") or (((\"world basics technical paper\") OR (\"world basics techniques paper\"))))) or (\"world bank technical paper\"))".
• Removing quotes may allow a broader search: (((( world banks technical paper ) or ((( world basics technical paper ) OR ( world basics techniques paper ))))) or ( world bank technical paper )).
• Adding a wildcard symbol may retrieve word variants: (((("world banks technical paper") or ((("world basics technical paper") OR ("world basics techniques paper"))))) or ("world bank technical paper"))*.