Perhaps you should try some spelling variations:
significantly altered » significantly affected (Expand Search), significantly elevated (Expand Search), significantly lower (Expand Search)
altered decrease » altered release (Expand Search), observed decrease (Expand Search), teer decrease (Expand Search)
i decrease » _ decrease (Expand Search), _ decreased (Expand Search), _ decreases (Expand Search)
a decrease » _ decrease (Expand Search), _ decreased (Expand Search), _ decreases (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 altered decrease\\") OR (\\"significantly ((i decrease) OR (a decrease))\\"))\"".
• Removing quotes may allow a broader search: (( significantly altered decrease ) OR ( significantly ((i decrease) OR (a decrease)) )).