Perhaps you should try some spelling variations:
"health impedance network system report" » "health importance network system report", "health temperance network system report", "head impedance network system report", "health impedance networked systems report", "health impedance network system reform", "health impedance network system support", "health impedance network system recent"
"health impedance network systems report" » "health importance network systems report", "health temperance network systems report", "head impedance network systems report", "health impedance networked systemss report", "health impedance network systems support", "health impedance network systems recent", "health impedance network systems transport"
"health science network synthesis report" » "health sciences network synthesis report", "health science networks synthesis report", "health science work synthesis report"
health device » health service, health services

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