Perhaps you should try some spelling variations:
network synthesis » network systems
evidence network » science network, guidance network, dence network
health evidence » health science
health guidance » health finance
network system » network systems, networked systems
system report » system reform, system support, system reforms
earth guide » health guide, search guide, earth tide
bath » both, path

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