Perhaps you should try some spelling variations:
"significantly predicted decrease" » "significantly reduced decrease" (Expand Search), "significantly reduce decrease" (Expand Search), "significant predictor decrease" (Expand Search), "significantly predicted secreted" (Expand Search), "significantly reported decrease" (Expand Search)
"significantly marked decrease" » "significantly larger decrease" (Expand Search), "significantly linked decrease" (Expand Search), "significantly improved decrease" (Expand Search), "significantly marked increase" (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 predicted decrease") OR ("significantly marked decrease"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"significantly predicted decrease\") OR (\"significantly marked decrease\"))*".
• Removing quotes may allow a broader search: (( significantly predicted decrease ) OR ( significantly marked decrease ))*.