Perhaps you should try some spelling variations:
decrease learning » increases learning (Expand search), decreases weaning (Expand search), defense learning (Expand search)
decrease lodging » decrease owing (Expand search), decrease walking (Expand search)
lodging decrease » logging decreases (Expand search), loading decreased (Expand search), taping decrease (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)
objects » object (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 lodging decrease ) OR ( decrease _ decrease learning objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease during decrease lodging decrease ) OR ( decrease _ decrease learning objects ))*.