Perhaps you should try some spelling variations:
"communicated diseases" » "communicable diseases", "complicated diseases", "communicable disease", "communicable diseasess", "complicated diseasess"
"communicated disease" » "communicable disease", "communicable diseases", "complicated 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 ("complicated cases"))) OR ("communicated disease")).
• Removing quotes may allow a broader search: (((( communicated diseases ) or ( complicated cases ))) or ( communicated disease )).
• Adding a wildcard symbol may retrieve word variants: (((("communicated diseases") or ("complicated cases"))) or ("communicated disease"))*.