Perhaps you should try some spelling variations:
network synthesis » network systems
systems transport » systems transportation
science networks » science network, sciences network, sequence networks
health impedance » health importance, health temperance, head impedance
health science » health sciences
systems report » systems support, systems recent
network system » network systems, networked systems
dence network » dense network, defence network, dense networks
system report » system reform, system support, system recent
health dence » health device, health evidence, health devices

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