Perhaps you should try some spelling variations:
substance network » distance network, substrate network, resistance network
systems transport » systems transportation
evidence network » science network, guidance network, dence network
health evidence » health science
systems support » system support, systems supporting, system supporting

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