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