Perhaps you should try some spelling variations:
"significantly elevated decrease" » "significantly greater decrease" (Expand Search), "significantly correlated decrease" (Expand Search), "significantly decreased decrease" (Expand Search), "significantly elevated depressive" (Expand Search), "significantly estimated decrease" (Expand Search)
"significantly weaker decrease" » "significantly greater decrease" (Expand Search), "significantly better decrease" (Expand Search), "significantly related decrease" (Expand Search), "significantly teer decrease" (Expand Search), "significantly water decreases" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (("significantly weaker decrease") OR ("significantly elevated decrease"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"significantly weaker decrease\") OR (\"significantly elevated decrease\"))".
• Removing quotes may allow a broader search: (( significantly weaker decrease ) OR ( significantly elevated decrease )).
• Adding a wildcard symbol may retrieve word variants: (("significantly weaker decrease") OR ("significantly elevated decrease"))*.