Perhaps you should try some spelling variations:
"health substance network synthesis report" » "health distance network synthesis report", "health substrate network synthesis report", "health resistance network synthesis report"
"health evidence network systems report" » "health guidance network systems report", "health dence network systems report", "health incidence networks systems report", "health evidence network systems support", "health evidence network systems transport", "health evidence networked systemss report"
"health evidence network systems recent" » "health guidance network systems recent", "health dence network systems recent", "health incidence networks systems recent", "health evidence networked systemss recent"
"health science network system report" » "health sciences network system report", "health science networks system report", "health science work system report", "health science networked systems report", "health science network system reform", "health science network system support", "health science network system recent"

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 network systems report") OR ("health evidence network systems recent"))) OR ("health science network system report"))) OR ("health substance network synthesis report"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"health evidence network systems report\") OR (\"health evidence network systems recent\"))) or (\"health science network system report\"))) or (\"health substance network synthesis report\"))*".
• Removing quotes may allow a broader search: (((((( health evidence network systems report ) OR ( health evidence network systems recent ))) or ( health science network system report ))) or ( health substance network synthesis report ))*.