Perhaps you should try some spelling variations:
"communicated disease" » "communicable disease", "complicated diseases", "communicate state"
"mediated diseases" » "related diseases", "medical diseases"
"related disease" » "related diseases"
"communicable diseases" » "communicate diseases"

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