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

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