Perhaps you should try some spelling variations:
basics technical » basic technical, basics techniques, devices technical
technical paper » technical papers
apps technical » app technical, apis technical, access technical
world basics » world basic, word basics, world brics
world apis » world anis, world kpis, world ai
world apps » world app

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) OR (world april)) technical paper ) OR ((( world apps technical paper ) OR ( world basics technical paper )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((world apis) OR (world april)) technical paper ) or ((( world apps technical paper ) or ( world basics technical paper ))))".
• Adding a wildcard symbol may retrieve word variants: (( ((world apis) OR (world april)) technical paper ) or ((( world apps technical paper ) or ( world basics technical paper ))))*.