Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
network synthesis » network systems
evidence network » science network, guidance network, dence network
health inference » health conference, health reference, health differences
health impedance » health importance, health temperance, head impedance
health evidence » health science

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