Perhaps you should try some spelling variations:
"communicate discover" » "community discovery", "communicate disabled", "communications over"
"communicated disease" » "communicable disease", "complicated diseases", "communicated vision"
"communicate state" » "communicate strategy", "communicating state", "communication state"

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: (((("communicable diseases") OR ("communicate discover"))) OR ((("communicated disease") OR ("communicate state")))).
• Removing quotes may allow a broader search: (((( communicable diseases ) or ( communicate discover ))) or ((( communicated disease ) or ( communicate state )))).
• Adding a wildcard symbol may retrieve word variants: (((("communicable diseases") or ("communicate discover"))) or ((("communicated disease") or ("communicate state"))))*.