Perhaps you should try some spelling variations:
decrease during » increase during (Expand search), increases during (Expand search), disease during (Expand search)
during decrease » during increased (Expand search), during depressed (Expand search), during disease (Expand search)
decrease costs » decreasing costs (Expand search), decreases post (Expand search), disease costs (Expand search)
costs decrease » loss decrease (Expand search), not decrease (Expand search), cells decrease (Expand search)
decrease when » decrease the (Expand search), decreases wheat (Expand search), decrease their (Expand search)
in decrease » in decreased (Expand search), and decrease (Expand search), can decrease (Expand search)
when object » when objects (Expand search), when subject (Expand search), en object (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( decrease in decrease during decrease ) OR ( decrease costs decrease when object ))~.