Perhaps you should try some spelling variations:
network synthesis » network systems
evidence network » science network, guidance network, dence network
sciences network » services network
health guidance » health evidence, health finance
systems report » system report, systems support, systems recent
science work » science works, science world, science where
health guide » health guido, earth guide, health grid
health gis » health gains, health gods, health grid

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