Perhaps you should try some spelling variations:
networks synthesis » network synthesis, networks systems, nets synthesis
disease incidence » diseases incident
health incidence » death incidence, health incident, health science
guidance network » guide network, finance network, impedance network
health guidance » health evidence, health finance, health substance
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) OR (disease incidence)) networks synthesis report ) OR ( health guidance network systems report )).
• Adding a wildcard symbol may retrieve word variants: (( ((health incidence) or (disease incidence)) networks synthesis report ) or ( health guidance network systems report ))*.