Perhaps you should try some spelling variations:
significantly improves » significantly improved (Expand Search), significantly improve (Expand Search), significantly improving (Expand Search)
significantly lower » significantly higher (Expand Search)
improves decrease » improves disease (Expand Search), improve disease (Expand Search), improved urease (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 lower decrease ) OR ( significantly improves decrease )).