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