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