Perhaps you should try some spelling variations:
network synthesis » network systems
guidance network » guide network, finance network, impedance network
sciences network » services network
science network » science networks, sequence networks
systems support » system support, systems supporting, system supporting
health guidance » health evidence, health finance, health substance
dence network » dense network, defence network, dense networks
model network » local network
science work » science works, science world, science where

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