Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
network synthesis » network systems
health incidence » path incidence, health insurance, high incidence
death incidence » disease incidence, growth incidence, dengue incidence
health incident » health including
health science » health sciences
guide network » guided network, side network, wide network
health guide » health guido, earth guide, health grid

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