Perhaps you should try some spelling variations:
significantly smaller » significantly higher (Expand Search), significantly lower (Expand Search), significantly greater (Expand Search)
significantly small » significantly impact (Expand Search), significantly impair (Expand Search), significantly vary (Expand Search)
smaller decrease » marked decrease (Expand Search), smaller areas (Expand Search), larger decrease (Expand Search)
small decrease » small increased (Expand Search)

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

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