Perhaps you should try some spelling variations:
surveillance control » surveillance clinical, surveillance camera, surveillance cameras
design intelligence » design intelligent, decision intelligence, foreign intelligence
surveillance covert » surveillance over, surveillance court, surveillance camera

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: design intelligence ((surveillance control) OR (surveillance covert)).
• Adding a wildcard symbol may retrieve word variants: design intelligence ((surveillance control) or (surveillance covert))*.