Perhaps you should try some spelling variations:
incidence networks » inference networks, influence networks, science networks
networks synthesis » network synthesis, networks systems, nets synthesis
health incidence » death incidence, health incident, health science
health impedance » health importance, health temperance, head impedance
network system » network systems, networked systems
system report » system reform, system support, system 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 synthesis report ) OR ( health impedance network system report )).
• Adding a wildcard symbol may retrieve word variants: (( health incidence networks synthesis report ) or ( health impedance network system report ))*.