Perhaps you should try some spelling variations:
"world basics technical paper" » "world basics techniques paper", "world devices technical paper", "world basic technique paper", "word basics technical paper", "world brics technical paper", "worlds basic technical paper", "world musics technical paper", "world bicsscs technical paper"
"world basic technical paper" » "world basic mechanical paper", "world basic technique paper", "world basic techniques paper", "world music technical paper", "world bicssc technical paper"
"work banks technical papers" » "work tasks technical papers", "work apps technical papers", "work aws technical papers", "work bank technical papers", "work blacks technical papers", "world banks technical papers"
"world apis technical papers" » "world api technical papers", "world apps technical papers", "world actions technical papers", "world anis technical papers", "world kpis technical papers"

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 basics technical paper") OR ("world basic technical paper"))) OR ((("work banks technical papers") OR ("world apis technical papers")))).
• Removing quotes may allow a broader search: (((( world basics technical paper ) or ( world basic technical paper ))) or ((( work banks technical papers ) or ( world apis technical papers )))).
• Adding a wildcard symbol may retrieve word variants: (((("world basics technical paper") or ("world basic technical paper"))) or ((("work banks technical papers") or ("world apis technical papers"))))*.