Perhaps you should try some spelling variations:
network synthesis » network systems
evidence network » dence network, evidence work, incidence networks
guidance network » finance network, impedance network, guided network
science network » sciences network, science networks, science work
systems report » systems support, systems recent, systems transport
system report » system reform, system support, system reforms
guide network » guided network, side network, wide network
health guide » health guido, earth guide, health grid
health gis » health gains, health gods, health grid

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