Perhaps you should try some spelling variations:
"health evidence network synthesis report" » "health science network synthesis report", "health guidance network synthesis report", "health incidence networks synthesis report", "health evidense network synthesis report", "health evidefence network synthesis report", "health evidense networks synthesis report"
"health dence network systems report" » "health dence network system report", "health dence network systems support", "health dence network systems recent", "health dense network systems report", "health defence network systems report", "health dense networks systems report", "health device network systems report", "health science network systems report", "health devices network systems report"
"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 science network synthesis report", "health devices 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 dence network systems report"))) OR ("health evidence network synthesis report"))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"health dence network synthesis report\") OR (\"health dence network systems report\"))) or (\"health evidence network synthesis report\"))*".
• Removing quotes may allow a broader search: (((( health dence network synthesis report ) OR ( health dence network systems report ))) or ( health evidence network synthesis report ))*.