Perhaps you should try some spelling variations:
"designing intelligent surveillance covert" » "designing intelligent surface covert", "learning intelligent surveillance covert", "mining intelligent surveillance covert", "developing intelligent surveillance covert", "designing intelligent surveillance over", "designing intelligent surveillance court", "designing intelligent surveillance camera"
"designing intelligent surveillance control" » "designing intelligent surface control", "learning intelligent surveillance control", "mining intelligent surveillance control", "developing intelligent surveillance control", "designing intelligent surveillance clinical", "designing intelligent surveillance camera", "designing intelligent surveillance cameras"
"decision intelligence surveillance covert" » "vision intelligent surveillance covert", "decision intelligence surveillance over", "decision intelligence surveillance court", "decision intelligence 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: (((("designing intelligent surveillance covert") OR ("designing intelligent surveillance control"))) OR ("decision intelligence surveillance covert")).
• Removing quotes may allow a broader search: (((( designing intelligent surveillance covert ) or ( designing intelligent surveillance control ))) or ( decision intelligence surveillance covert )).
• Adding a wildcard symbol may retrieve word variants: (((("designing intelligent surveillance covert") or ("designing intelligent surveillance control"))) or ("decision intelligence surveillance covert"))*.