Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
evidence networks » evidence network, incidence networks, science networks
network synthesis » network systems
substance network » distance network, substrate network, resistance network
science network » sciences network, science networks, science work
health science » health sciences

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