Perhaps you should try some spelling variations:
networks synthesis » networks systems, nets synthesis
healthy reference » health references, healing references, heading reference
"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 evidence network synthesis report", "health substance network synthesis report"
health reference » health references, earth reference, hath reference

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 reference) OR (healthy reference)) networks synthesis report") OR ("health guidance network synthesis report")).
• Removing quotes may allow a broader search: (( ((health reference) OR (healthy reference)) networks synthesis report ) or ( health guidance network synthesis report )).
• Adding a wildcard symbol may retrieve word variants: (("((health reference) OR (healthy reference)) networks synthesis report") or ("health guidance network synthesis report"))*.