Perhaps you should try some spelling variations:
"health guidance network synthesis report" » "health guidance network systems report", "health guide network synthesis report", "health finance network synthesis report", "health impedance network synthesis report", "health substance network synthesis report"
"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 device » health service, health services
health dence » health science, health devices, health degree

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 dence) or (health device)) network synthesis report") OR ((("health guidance network synthesis report") OR ("health evidence network synthesis report")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"((health dence) or (health device)) network synthesis report\") or (((\"health guidance network synthesis report\") OR (\"health evidence network synthesis report\"))))".
• Removing quotes may allow a broader search: (( ((health dence) or (health device)) network synthesis report ) or ((( health guidance network synthesis report ) OR ( health evidence network synthesis report )))).
• Adding a wildcard symbol may retrieve word variants: (("((health dence) or (health device)) network synthesis report") or ((("health guidance network synthesis report") OR ("health evidence network synthesis report"))))*.