Perhaps you should try some spelling variations:
"communicated diseases" » "communicable disease", "communicate discover", "communicated threats", "communicable diseases", "communicate states", "communicated visions"
"communicate disabled" » "communicate discover", "communicate listen", "communicate defined"
"complicated diseases" » "complicated cases", "complex diseases", "complicated case"
"communicated disease" » "communicable disease", "communicate state", "communicated vision"
"mediated diseases" » "related diseases", "medical diseases", "related disease"

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