Perhaps you should try some spelling variations:
decrease learning » increases learning (Expand search), decreases weaning (Expand search), defense learning (Expand search)
during increased » during increasing (Expand search), producing increased (Expand search), favoring increased (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
learning object » learning objects (Expand search)
increased the » increase the (Expand search), increases the (Expand search)
the decrease » to decrease (Expand search), and decrease (Expand search)
in decrease » in decreased (Expand search), on decrease (Expand search), pain decrease (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( decrease during increased the decrease ) OR ( decrease in decrease learning object ))~.