Perhaps you should try some spelling variations:
"communicated diseases" » "communicable diseases", "communicable disease", "communicate disabled", "communicable diseasess", "communicate states"
"complicated diseases" » "complicated cases", "complex diseases", "mediated diseases"
"communicated disease" » "communicable disease", "communicable diseases", "communicate state"
"communicate states" » "communicate state", "communicate strategy", "communicative status"

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: (("complicated diseases") OR ((((("communicated diseases") OR ("communicate states"))) OR ("communicated disease")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"complicated diseases\") or (((((\"communicated diseases\") OR (\"communicate states\"))) or (\"communicated disease\"))))".
• Removing quotes may allow a broader search: (( complicated diseases ) or ((((( communicated diseases ) OR ( communicate states ))) or ( communicated disease )))).
• Adding a wildcard symbol may retrieve word variants: (("complicated diseases") or ((((("communicated diseases") OR ("communicate states"))) or ("communicated disease"))))*.