Perhaps you should try some spelling variations:
"communicated disease" » "communicated vision"
"complicated diseases" » "complicated cases", "complex diseases", "mediated diseases"
"communicate disease" » "community disease", "complicate disease", "communicate delegate"
"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 ((("communicable disease") OR ((("communicate disease") OR ((((("communicated disease") OR ("communicate state"))) OR ("complicated diseases")))))))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"communicable diseases\") or (((\"communicable disease\") or (((\"communicate disease\") or (((((\"communicated disease\") OR (\"communicate state\"))) or (\"complicated diseases\"))))))))".
• Removing quotes may allow a broader search: (( communicable diseases ) or ((( communicable disease ) or ((( communicate disease ) or ((((( communicated disease ) OR ( communicate state ))) or ( complicated diseases )))))))).
• Adding a wildcard symbol may retrieve word variants: (("communicable diseases") or ((("communicable disease") or ((("communicate disease") or ((((("communicated disease") OR ("communicate state"))) or ("complicated diseases"))))))))*.