Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
"health evidence network synthesis report" » "health science network synthesis report", "health guidance network synthesis report", "health dence network synthesis report"
death incidence » disease incidence, growth incidence, dengue incidence
health science » health sciences
"health guided network systems report" » "health guided network system report", "health guided network systems support", "health guided network systems recent", "hath guided network systems report", "health guido network systems report", "health founded network systems report", "health guidod network systems report", "earth guided network systems report", "health gridd network systems report"
"health guided network synthesis report" » "hath guided network synthesis report", "health guido network synthesis report", "health founded network synthesis report", "health guidod network synthesis report", "earth guided network synthesis report", "health gridd network synthesis report"
"health guide network synthesis report" » "health side network synthesis report", "health wide network synthesis report", "health inside network synthesis report", "health guido network synthesis report", "earth guide network synthesis report", "health grid network synthesis report"

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