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