Perhaps you should try some spelling variations:
depressed optimal » depressed medical (Expand search), derived optimal (Expand search)
during depressed » during depressive (Expand search), during repressive (Expand search), feeling depressed (Expand search)
optimal training » optimal trading (Expand search), optimum training (Expand search), optimal timing (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
decrease rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
rate decrease » rats decreases (Expand search), rate increase (Expand search), 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.

• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease during depressed optimal training ) OR ( decrease rate decrease to decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease during depressed optimal training ) OR ( decrease rate decrease to decrease ))*.