Perhaps you should try some spelling variations:
network synthesis » network systems
health incidence » health evidence, path incidence, health insurance
health incident » health including
death incidence » growth incidence, dengue incidence
health science » health sciences
nets synthesis » net synthesis, dots synthesis, its synthesis
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 incidence) OR (health science))) OR (health incident))) OR (death incidence)) nets synthesis report ) OR ( ((health guide) OR (health grid)) network synthesis report )).
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( ((((((health incidence) OR (health science))) or (health incident))) or (death incidence)) nets synthesis report ) or ( ((health guide) or (health grid)) network synthesis report ))".
• Adding a wildcard symbol may retrieve word variants: (( ((((((health incidence) OR (health science))) or (health incident))) or (death incidence)) nets synthesis report ) or ( ((health guide) or (health grid)) network synthesis report ))*.