Perhaps you should try some spelling variations:
decrease placing » decrease replacing (Expand search), disease placing (Expand search), decreases weaning (Expand search)
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)
placing objects » teaching objects (Expand search), speaking objects (Expand search), flying objects (Expand search)
decrease human » increase human (Expand search), disease human (Expand search), decrease asian (Expand search)
human decrease » human deceased (Expand search), human increase (Expand search), human disease (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search), decrease of (Expand search)
the decrease » to 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 human decrease during decrease ) OR ( decrease the decrease placing objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease human decrease during decrease ) OR ( decrease the decrease placing objects ))*.