Perhaps you should try some spelling variations:
substance network » distance network, substrate network, resistance network
evidence network » science network, dence network, incidence networks
guidance network » guide network, finance network, impedance network
health evidence » health science
health guidance » health finance
systems report » system report, systems support, systems recent
health guide » health guido, health grid, health side
earth guide » search guide, bath guide, earth tide

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