Perhaps you should try some spelling variations:
basics technical » basic technical, basics techniques, basic technique
technical paper » technical papers
api technical » mali technical, ii technical, iii technical
app technical » ntp technical, 2 technical, 7 technical
world basics » world basic, word basics, world brics
world api » world ai, world april, world apps
world app » world a, world ai

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 api technical paper ) OR ((( world app technical paper ) OR ( world basics technical paper )))).
• Adding a wildcard symbol may retrieve word variants: (( world api technical paper ) or ((( world app technical paper ) or ( world basics technical paper ))))*.