Perhaps you should try some spelling variations:
systems supporting » system support
network synthesis » network systems
sciences network » services network
guidance network » finance network, impedance network, guided network
science network » science networks, science work, sequence networks
systems support » system support, system supporting
health guidance » health evidence, health finance, health substance
dence network » dense network, defence network, dense networks
guide network » guided network, side network, wide network
health guide » health guido, earth guide, 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 ((dence network) OR (((science network) OR (sciences network)))) ((systems support) OR (systems supporting)) ) OR ((( health guidance network synthesis report ) OR ( health guide network synthesis report )))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( health ((dence network) or (((science network) or (sciences network)))) ((systems support) OR (systems supporting)) ) or ((( health guidance network synthesis report ) or ( health guide network synthesis report ))))".
• Adding a wildcard symbol may retrieve word variants: (( health ((dence network) or (((science network) or (sciences network)))) ((systems support) OR (systems supporting)) ) or ((( health guidance network synthesis report ) or ( health guide network synthesis report ))))*.