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), taping decrease (Expand search)
cross decreased » causes decreased (Expand search), corn decreased (Expand search), loss decrease (Expand search)
decrease cross » decrease costs (Expand search), increase cross (Expand search), decrease sucrose (Expand search)
decreased null » decreased neural (Expand search), decreased guilt (Expand search), decreased il (Expand search)
null subjects » null subject (Expand search), null object (Expand search)
decrease at » decrease akt (Expand search), decrease and (Expand search), decrease in (Expand search)
at decrease » rate decrease (Expand search), that decrease (Expand search), and decrease (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 during decrease at decrease ) OR ( decrease cross decreased null subjects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease during decrease at decrease ) OR ( decrease cross decreased null subjects ))*.