Perhaps you should try some spelling variations:
network synthesis » network systems
evidence network » guidance network, dence network, incidence networks
health impedance » health importance, health temperance, head impedance
health evidence » health science
science network » sciences network, science networks, sequence networks
science work » science works, science world, science where

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 work)) synthesis report ))) OR ( health impedance 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 work)) synthesis report ))) or ( health impedance network synthesis report ))".
• Adding a wildcard symbol may retrieve word variants: (((( health evidence network synthesis report ) or ( health ((science network) OR (science work)) synthesis report ))) or ( health impedance network synthesis report ))*.