Perhaps you should try some spelling variations:
significantly less » significantly lower (Expand Search), significantly reduce (Expand Search), significantly better (Expand Search)
significantly teer » significantly better (Expand Search), significantly weaker (Expand Search), significantly lower (Expand Search)
less decrease » mean decrease (Expand Search), we decrease (Expand Search), levels decreased (Expand Search)
teer decrease » mean decrease (Expand Search), greater decrease (Expand Search)

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

• Removing quotes may allow a broader search: (( significantly less decrease ) OR ( significantly teer decrease ))~.