Perhaps you should try some spelling variations:
significantly alter » significantly altered (Expand Search), significantly smaller (Expand Search), significantly better (Expand Search)
significant linear » significant clinical (Expand Search), significant gender (Expand Search), significant level (Expand Search)
linear decrease » linear increase (Expand Search)
alter decrease » larger decrease (Expand Search), water decreases (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: (( significant linear decrease ) OR ( significantly alter decrease )).