Perhaps you should try some spelling variations:
network synthesis » network systems
health incidence » health science, health evidence, path incidence
health incident » health including
death incidence » growth incidence, dengue incidence
nets synthesis » net synthesis, dots synthesis, its synthesis
side network » wide network, inside network, guide network
health side » health site, health inside, health some

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 incident))) OR (death incidence)) nets synthesis report ) OR ( health side network synthesis report )).
• Adding a wildcard symbol may retrieve word variants: (( ((((health incidence) or (health incident))) or (death incidence)) nets synthesis report ) or ( health side network synthesis report ))*.