Perhaps you should try some spelling variations:
network synthesis » network systems
evidence network » incidence networks, resilience network, reference network
science networks » sciences network, sequence networks, science works
guidance network » guide network, finance network, impedance network
science network » sciences network, science work, sequence networks
health guidance » health evidence, health finance, health substance
systems report » system report, systems support, systems recent
dence network » dense network, defence network, dense networks
health guide » health guido, earth guide, health side
health grid » health guido, health gis, health good

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