Perhaps you should try some spelling variations:
significantly improved » significantly increased (Expand Search)
significantly greater » significantly correlated (Expand Search), significantly increased (Expand Search), significantly higher (Expand Search)
improved decrease » improved urease (Expand Search), marked decrease (Expand Search)
greater decrease » greatest decrease (Expand Search), greater increase (Expand Search), greater disease (Expand Search)

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

• Removing quotes may allow a broader search: (( significantly greater decrease ) OR ( significantly improved decrease )).