Perhaps you should try some spelling variations:
evidence network » science network, dence network, incidence networks
guidance network » finance network, impedance network, science network
health evidence » health science
systems report » system report, systems support, systems recent
guide network » side network, wide network, inside network
health guide » health guido, earth guide, 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 systems report ) OR ((( health ((guidance network) OR (guided network)) synthesis report ) OR ( health guide network synthesis report )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( health evidence network systems report ) or ((( health ((guidance network) OR (guided network)) synthesis report ) or ( health guide network synthesis report ))))".
• Adding a wildcard symbol may retrieve word variants: (( health evidence network systems report ) or ((( health ((guidance network) OR (guided network)) synthesis report ) or ( health guide network synthesis report ))))*.