Perhaps you should try some spelling variations:
incidence networks » inference networks, influence networks, science networks
network synthesis » network systems
health incidence » death incidence, health incident, health science
networks systems » network systems, networks system, networked systems
health impedance » health importance, health temperance, head impedance
systems report » system report, systems support, systems recent

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: (( health incidence networks systems report ) OR ( health impedance network synthesis report )).
• Adding a wildcard symbol may retrieve word variants: (( health incidence networks systems report ) or ( health impedance network synthesis report ))*.