Perhaps you should try some spelling variations:
significantly better » significantly greater (Expand Search), significantly higher (Expand Search), significantly lower (Expand Search)
significantly teer » significantly weaker (Expand Search), significantly lower (Expand Search), significantly alter (Expand Search)
better decrease » greater decrease (Expand Search), between 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 teer decrease ) OR ( significantly better decrease )).