Perhaps you should try some spelling variations:
distance networks » resistance network, state networks, alliance networks
evidence network » science network, guidance network, dence network
distance network » resistance network, disease network, finance network
networks systems » networks system, networked systems, network system
health evidence » health science
health distance » healthy distance, earth distance, health assistance
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 distance network systems support ) OR ( Health distance networks systems support )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( health evidence network synthesis report ) or ((( Health distance network systems support ) OR ( Health distance networks systems support ))))".
• Adding a wildcard symbol may retrieve word variants: (( health evidence network synthesis report ) or ((( Health distance network systems support ) OR ( Health distance networks systems support ))))*.