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