Perhaps you should try some spelling variations:
"world basics technical paper" » "world basic technical paper", "world basics techniques paper", "world basic technique paper", "word basics technical paper", "world brics technical paper"
"world bruce technical paper" » "world reduce technical paper", "world source technical paper", "world azure technical paper", "lord bruce technical paper", "donald bruce technical paper"
"world apps technical papers" » "world app technical papers", "world apis technical papers"
"world kris technical papers" » "world apis technical papers", "world gis technical papers", "world clis technical papers", "world kpis technical papers", "world boris technical papers", "world risk technical papers"

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"world basics technical paper\") OR (\"world bruce technical paper\"))) OR (((\"world apps technical papers\") OR (\"world kris technical papers\"))))".
• Removing quotes may allow a broader search: (((( world basics technical paper ) OR ( world bruce technical paper ))) OR ((( world apps technical papers ) OR ( world kris technical papers )))).
• Adding a wildcard symbol may retrieve word variants: (((("world basics technical paper") OR ("world bruce technical paper"))) OR ((("world apps technical papers") OR ("world kris technical papers"))))*.