Perhaps you should try some spelling variations:
significantly smaller » significantly higher (Expand Search), significantly lower (Expand Search), significantly greater (Expand Search)
smaller decrease » small decrease (Expand Search), marked decrease (Expand Search), smaller areas (Expand Search)
nn decrease » a decrease (Expand Search), mean decrease (Expand Search), gy decreased (Expand Search)
_ decrease » _ decreased (Expand Search), _ decreasing (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 smaller decrease ) OR ( significantly ((nn decrease) OR (_ decrease)) ))~".
• Adding a wildcard symbol may retrieve word variants: (( significantly smaller decrease ) OR ( significantly ((nn decrease) OR (_ decrease)) ))*.