Perhaps you should try some spelling variations:
decrease during » increase during (Expand search), increases during (Expand search), increased 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 skins » increase skin (Expand search), decrease owing (Expand search), decrease its (Expand search)
skins decrease » statins decrease (Expand search), soil decrease (Expand search), lesions decrease (Expand search)
in objectives » in objective (Expand search), on objectives (Expand search), main objectives (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: "(( decrease costs decrease during decrease ) OR ( decrease skins decrease in objectives ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease costs decrease during decrease ) OR ( decrease skins decrease in objectives ))*.