Perhaps you should try some spelling variations:
networks synthesis » network synthesis, networks systems, nets synthesis
health incidence » health incident, health evidence, path incidence
death incidence » growth incidence, dengue incidence, graphs incidence
health science » health sciences
systems report » system report, systems support, systems recent
guide network » guided network, side network, wide network
earth guide » health guide, search guide, bath guide

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