Perhaps you should try some spelling variations:
"significantly reported decrease" » "significantly related decrease" (Expand Search), "significantly restored decrease" (Expand Search), "significantly predicted decrease" (Expand Search), "significantly reported disease" (Expand Search), "significantly reported depressive" (Expand Search), "significantly reported case" (Expand Search)
"significantly lower decrease" » "significantly higher decrease" (Expand Search), "significantly larger decrease" (Expand Search), "significantly linear decrease" (Expand Search), "significantly teer decrease" (Expand Search)

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"significantly lower decrease\") OR (\"significantly reported decrease\"))~".
• Removing quotes may allow a broader search: (( significantly lower decrease ) OR ( significantly reported decrease ))~.
• Adding a wildcard symbol may retrieve word variants: (("significantly lower decrease") OR ("significantly reported decrease"))*.