Perhaps you should try some spelling variations:
"health evidence network synthesis report" » "health evidence network systems report", "health science network synthesis report", "health dence network synthesis report", "health incidence networks synthesis report"
"health defenses network synthesis report" » "health defenses network systems report", "health defense network synthesis report", "health addresses network synthesis report", "health defenses new synthesis report", "heart defenses network synthesis report", "health diseases network synthesis report", "health depends network synthesis report"
"health guidance network synthesis report" » "health guidance network systems report", "health finance network synthesis report", "health impedance network synthesis report", "health guided network synthesis report", "health substance network synthesis report"
"health guide network synthesis report" » "health guide network systems report", "health guided network synthesis report", "health side network synthesis report", "health wide network synthesis report", "health guido network synthesis report", "earth guide network synthesis report", "health grid network synthesis report"
"health sciences net synthesis report" » "earth sciences net synthesis report", "health sciences direct synthesis report", "health sciences new synthesis report", "health sciences nat synthesis report", "health sciences nes synthesis report"
"health science net synthesis report" » "health science direct synthesis report", "health science next synthesis report", "health science new synthesis report", "health science neo synthesis report"

Try widening your search to All Fields.

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 ("health defenses network synthesis report"))) OR ((("health science net synthesis report") OR ("health sciences net synthesis report"))))) OR ((("health guidance network synthesis 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 (\"health defenses network synthesis report\"))) or (((\"health science net synthesis report\") or (\"health sciences net synthesis report\"))))) or (((\"health guidance network synthesis report\") OR (\"health guide network synthesis report\"))))".
• Removing quotes may allow a broader search: (((((( health evidence network synthesis report ) or ( health defenses network synthesis report ))) or ((( health science net synthesis report ) or ( health sciences net synthesis report ))))) or ((( health guidance network synthesis report ) OR ( health guide network synthesis report )))).
• Adding a wildcard symbol may retrieve word variants: (((((("health evidence network synthesis report") or ("health defenses network synthesis report"))) or ((("health science net synthesis report") or ("health sciences net synthesis report"))))) or ((("health guidance network synthesis report") OR ("health guide network synthesis report"))))*.