Perhaps you should try some spelling variations:
intelligence projects » intelligence project, intelligence process, intelligence problems
intelligence papers » intelligence pattern, intelligence part, intelligence process
oecd artificial » world artificial, und artificial, beyond artificial

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: oecd artificial ((intelligence papers) OR (intelligence projects)).
• Adding a wildcard symbol may retrieve word variants: oecd artificial ((intelligence papers) or (intelligence projects))*.