Perhaps you should try some spelling variations:
"word basics technical paper" » "word basic technical paper", "word basics techniques paper", "word basic technique paper", "word basics technical papers", "world basic technical paper", "bond basics technical paper", "cord basic 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"
"work apps technical paper" » "work apps technical papers", "work app technical paper", "work apis technical paper", "workup apps technical paper", "work apple 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 apps technical paper"))) OR ("word basics 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 apps technical paper\"))) or (\"word basics technical paper\"))))".
• Removing quotes may allow a broader search: (( world banks technical paper ) or ((((( work banks technical paper ) OR ( work apps technical paper ))) or ( word basics technical paper )))).
• Adding a wildcard symbol may retrieve word variants: (("world banks technical paper") or ((((("work banks technical paper") OR ("work apps technical paper"))) or ("word basics technical paper"))))*.