Perhaps you should try some spelling variations:
"health impedance network synthesis report" » "health importance network synthesis report", "health temperance network synthesis report", "head impedance network synthesis report"
"health impedance network systems report" » "health importance network systems report", "health temperance network systems report", "head impedance network systems report", "health impedance network system report", "health impedance network systems support", "health impedance network systems recent"
"health dence network synthesis report" » "health dense network synthesis report", "health defence network synthesis report", "health dense networks synthesis report", "health device network synthesis report", "health evidence network synthesis report", "health science 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 dence network synthesis report") OR ((("health impedance network synthesis report") OR ("health impedance network systems report")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"health dence network synthesis report\") or (((\"health impedance network synthesis report\") OR (\"health impedance network systems report\"))))".
• Removing quotes may allow a broader search: (( health dence network synthesis report ) or ((( health impedance network synthesis report ) OR ( health impedance network systems report )))).
• Adding a wildcard symbol may retrieve word variants: (("health dence network synthesis report") or ((("health impedance network synthesis report") OR ("health impedance network systems report"))))*.