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 cots » decrease costs (Expand search), decrease its (Expand search), decrease total (Expand search)
decrease il » decreased il (Expand search), decrease in (Expand search), decrease hiv (Expand search)
il decrease » l decrease (Expand search), will decrease (Expand search), oil decreases (Expand search)
cots based » dots based (Expand search), cots baseado (Expand search), hosts based (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 _ decrease il decrease ) OR ( decrease during decrease cots based ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease _ decrease il decrease ) OR ( decrease during decrease cots based ))*.