Perhaps you should try some spelling variations:
"communicate disabled" » "communicate discover", "communicate listen", "communicate defined"
"communicate diseases" » "communicable disease", "complicated diseases", "communicate discover"
"communicated disease" » "communicable disease", "complicated diseases", "communicate 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 diseases"))) OR ((("communicate disabled") OR ("communicated disease")))).
• Removing quotes may allow a broader search: (((( communicable diseases ) or ( communicate diseases ))) or ((( communicate disabled ) or ( communicated disease )))).
• Adding a wildcard symbol may retrieve word variants: (((("communicable diseases") or ("communicate diseases"))) or ((("communicate disabled") or ("communicated disease"))))*.