Perhaps you should try some spelling variations:
significantly longer » significantly larger (Expand Search), significantly higher (Expand Search), significantly better (Expand Search)
significantly lower » significantly higher (Expand Search)
longer decrease » larger decrease (Expand Search), linear decrease (Expand Search), largest decrease (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 longer decrease ) OR ( significantly lower decrease )).