Perhaps you should try some spelling variations:
"health dense networks synthesis report" » "health dense network synthesis report", "health dense networks systems report", "health gene networks synthesis report", "healthy sense networks synthesis report", "health disease networks synthesis report", "health device networks synthesis report"
"health substance network system report" » "health distance network system report", "health substrate network system report", "health resistance network system report", "health substance network systems report", "health substance networked systems report", "health substance network system reform", "health substance network system support", "health substance network system reforms"
"health dense nets synthesis report" » "health dense net synthesis report", "health dense dots synthesis report", "health dense its synthesis report", "healthy sense nets synthesis report", "health disease nets synthesis report", "health device nets synthesis report", "health dense sets synthesis report", "health dense jets synthesis 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 dense nets synthesis report"))) OR ("health substance network system report")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"health dense networks synthesis report\") OR (\"health dense nets synthesis report\"))) or (\"health substance network system report\"))".
• Removing quotes may allow a broader search: (((( health dense networks synthesis report ) OR ( health dense nets synthesis report ))) or ( health substance network system report )).
• Adding a wildcard symbol may retrieve word variants: (((("health dense networks synthesis report") OR ("health dense nets synthesis report"))) or ("health substance network system report"))*.