Perhaps you should try some spelling variations:
"health dense networks synthesis report" » "health dense network synthesis report", "health dense networks systems report", "health dense nets synthesis report", "health gene networks synthesis report", "healthy sense networks synthesis report", "health disease networks synthesis report", "health device networks synthesis report"
"health dence network system report" » "health dence network systems report", "health dence networked systems report", "health dense network system report", "health defence network system report", "health device network system report", "health dence network system reform", "health dence network system support", "health dence network system recent", "health evidence network system report", "health science network system report"

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