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