Perhaps you should try some spelling variations:
complicated diseases » complicated cases, complex diseases, mediated diseases
communicated disease » communicable disease, communicable diseases, communicated vision
communicate state » communicate strategy, communicating state, communication state

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: (( complicated diseases ) OR ( ((communicated disease) OR (communicate state)) )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( complicated diseases ) or ( ((communicated disease) OR (communicate state)) ))".
• Adding a wildcard symbol may retrieve word variants: (( complicated diseases ) or ( ((communicated disease) OR (communicate state)) ))*.