Perhaps you should try some spelling variations:
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)
depressed will » depressed skull (Expand search), depressed i (Expand search)
decrease mac » decrease at (Expand search), decrease toc (Expand search), decrease human (Expand search)
mac protocol » and protocol (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), to 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 depressed will decrease ) OR ( decrease of decrease mac protocol ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease during depressed will decrease ) OR ( decrease of decrease mac protocol ))*.