Perhaps you should try some spelling variations:
significantly smaller » significantly higher (Expand Search), significantly greater (Expand Search), significantly better (Expand Search)
significantly lower » significantly higher (Expand Search)
smaller decrease » small decrease (Expand Search), marked decrease (Expand Search), smaller areas (Expand Search)
lower decrease » larger decrease (Expand Search), linear decrease (Expand Search), teer decrease (Expand Search)

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

• Removing quotes may allow a broader search: (( significantly lower decrease ) OR ( significantly smaller decrease )).