Perhaps you should try some spelling variations:
significantly mediate » significantly mediated (Expand Search), significantly predicted (Expand Search), significantly mitigated (Expand Search)
mediate decrease » mean decrease (Expand Search), mediated defense (Expand Search)
we decrease » _ decrease (Expand Search), nn decrease (Expand Search), mean decrease (Expand Search)
a decrease » _ decrease (Expand Search), _ decreased (Expand Search), _ decreases (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 ((we decrease) OR (a decrease))\\") OR (\\"significantly mediate decrease\\"))\"".
• Removing quotes may allow a broader search: (( significantly ((we decrease) OR (a decrease)) ) OR ( significantly mediate decrease )).