Perhaps you should try some spelling variations:
substance network » substrate network, resistance network, distance networks
evidence network » science network, guidance network, dence network
networks systems » networks system, networked systems, network system
distance network » distance networks, resistance network, disease network
health evidence » health science
health distance » healthy distance, earth distance, health assistance
systems report » system report, systems support, systems recent
health dense » healthy sense, health disease, health device

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 dense networks systems report ))) OR ((( health substance network synthesis report ) OR ( health distance network synthesis report )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(((( health evidence network systems report ) or ( health dense networks systems report ))) or ((( health substance network synthesis report ) OR ( health distance network synthesis report ))))".
• Adding a wildcard symbol may retrieve word variants: (((( health evidence network systems report ) or ( health dense networks systems report ))) or ((( health substance network synthesis report ) OR ( health distance network synthesis report ))))*.