Perhaps you should try some spelling variations:
network synthesis » network systems
networks systems » network systems, networked systems, network system
health incidence » death incidence, health incident, health evidence
guidance network » guide network, finance network, impedance network
networks system » network system, network systems, networked systems
health guidance » health evidence, health finance, health substance
health science » health sciences

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 science ((networks systems) OR (networks system)) report ) OR ( ((health incidence) OR (health science)) ((networks systems) OR (networks system)) report ))) OR ( health guidance network synthesis report )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( health science ((networks systems) OR (networks system)) report ) or ( ((health incidence) or (health science)) ((networks systems) OR (networks system)) report ))) or ( health guidance network synthesis report ))".
• Adding a wildcard symbol may retrieve word variants: (((( health science ((networks systems) OR (networks system)) report ) or ( ((health incidence) or (health science)) ((networks systems) OR (networks system)) report ))) or ( health guidance network synthesis report ))*.