Perhaps you should try some spelling variations:
significantly shorter » significantly higher (Expand Search), significantly lower (Expand Search), significantly greater (Expand Search)
shorter decrease » reported decrease (Expand Search), scores decreased (Expand Search), greater decrease (Expand Search)
teer decrease » mean decrease (Expand Search), greater decrease (Expand Search)
nn decrease » _ decrease (Expand Search), a decrease (Expand Search), mean decrease (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 ((teer decrease) OR (nn decrease)) ) OR ( significantly shorter decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( significantly ((teer decrease) OR (nn decrease)) ) OR ( significantly shorter decrease ))*.