Perhaps you should try some spelling variations:
network synthesis » network systems
science networks » sciences network, sequence networks, science works
guidance network » guide network, finance network, impedance network
science network » sciences network, science work, sequence networks
health guidance » health evidence, health finance, health substance
systems report » system report, systems support, systems recent
grid network » grid networks, hybrid network, world network
health grid » health guide, health guido, health gis

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