Perhaps you should try some spelling variations:
decrease learning » increases learning (Expand search), decreases weaning (Expand search), defense learning (Expand search)
during depressed » during depressive (Expand search), during repressive (Expand search), feeling depressed (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
learning object » learning objects (Expand search)
depressed the » depresses the (Expand search), depress the (Expand search), depressao the (Expand search)
the decrease » and decrease (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease the (Expand search)

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

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