Perhaps you should try some spelling variations:
"world apis technical paper" » "world apis technical papers", "world api technical paper", "world apps technical paper", "world basics technical paper", "world anis technical paper", "world kpis technical paper"
"world iii technical paper" » "world iii technical papers", "world ii technical paper", "world 2 technical paper", "world 7 technical paper", "world i technical paper", "world iv technical paper"

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (("world apis technical paper") OR ("world iii technical paper"))*.
• Removing quotes may allow a broader search: (( world apis technical paper ) or ( world iii technical paper ))*.