Perhaps you should try some spelling variations:
networks synthesis » nets synthesis
"health evidence network synthesis report" » "health evidence network systems report", "health science network synthesis report", "health guidance network synthesis report", "health dence network synthesis report"
"health inference networks systems report" » "health conference networks systems report", "health reference networks systems report", "health differences networks systems report", "health inference network systems report", "health inference networks system report", "health inference networked systems report", "health inference networks systems support", "health inference networks systems recent"
health incidence » death incidence, health incident, path incidence
health sciences » earth sciences

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 inference networks systems report") OR ("((health incidence) or (((health science) or (health sciences)))) networks synthesis report"))) OR ("health evidence network synthesis report")).
• Removing quotes may allow a broader search: (((( health inference networks systems report ) or ( ((health incidence) or (((health science) or (health sciences)))) networks synthesis report ))) or ( health evidence network synthesis report )).
• Adding a wildcard symbol may retrieve word variants: (((("health inference networks systems report") or ("((health incidence) or (((health science) or (health sciences)))) networks synthesis report"))) or ("health evidence network synthesis report"))*.