Perhaps you should try some spelling variations:
"work basics techniques paper" » "work basic techniques paper", "work basic technique paper", "work based techniques paper", "work basics techniques upper", "work basics techniques peter", "work basics techniques pattern", "word basics techniques paper", "work basis techniques paper"
"work basics technical paper" » "work basic technical paper", "work basic technique paper", "work statistics technical paper", "work basics technical papers", "word basics technical paper", "work basis technical paper"
"world banks technical paper" » "world tasks 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 tasks technical paper", "work blocks technical paper", "work apis technical paper", "work banks technical papers", "work bank technical paper", "work blacks technical paper", "work back 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 ((("work banks technical paper") OR ((("work basics technical paper") OR ("work basics techniques 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 basics technical paper\") OR (\"work basics techniques paper\"))))))".
• Removing quotes may allow a broader search: (( world banks technical paper ) or ((( work banks technical paper ) or ((( work basics technical paper ) OR ( work basics techniques paper )))))).
• Adding a wildcard symbol may retrieve word variants: (("world banks technical paper") or ((("work banks technical paper") or ((("work basics technical paper") OR ("work basics techniques paper"))))))*.