Perhaps you should try some spelling variations:
"communicated diseases" » "communicated disease", "complicated diseases", "communicated threats"
"communicate discover" » "community discovery", "communications over", "communicate listen"
"communicate disabled" » "communicate listen", "communicated disease", "communicate defined"

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