Perhaps you should try some spelling variations:
insurance network » insurance networks, assurance network, assurance networks
network synthesis » network systems
network system » network systems, networked systems
dence network » dense network, defence network, dense networks
system report » system reform, system support, system reforms
health dence » health device, health evidence, health science
health guide » health guido, earth guide, health side
health grid » health guido, health gis, health good

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