Perhaps you should try some spelling variations:
"significantly greater decrease" » "significantly correlated decrease" (Expand Search), "significantly increased decrease" (Expand Search), "significantly higher decrease" (Expand Search), "significantly greatest decrease" (Expand Search), "significantly greater increase" (Expand Search), "significantly greater disease" (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 greater decrease\") OR (\"significantly lower decrease\"))~".
• Removing quotes may allow a broader search: (( significantly greater decrease ) OR ( significantly lower decrease ))~.
• Adding a wildcard symbol may retrieve word variants: (("significantly greater decrease") OR ("significantly lower decrease"))*.