Perhaps you should try some spelling variations:
"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 evidence » health science
health sciences » earth sciences

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