Perhaps you should try some spelling variations:
"communicated diseases" » "communicated disease", "communicate disabled", "communicated threats"
"communicate diseases" » "communicated disease", "communicate disabled", "communicate messages"
"complicated diseases" » "complicated cases", "complex diseases", "mediated diseases"
"communicate discover" » "community discovery", "communicate disabled", "communications over"

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