Perhaps you should try some spelling variations:
during depressed » during depressive (Expand search), during repressive (Expand search), feeling depressed (Expand search)
decrease ligand » decrease lipid (Expand search), decrease lodging (Expand search), decreases liquid (Expand search)
ligand decrease » ligand release (Expand search), ligands increased (Expand search)
decrease during » increase during (Expand search), increases during (Expand search), increased during (Expand search)
decrease pulp » decrease cell (Expand search), decrease il (Expand search), decrease pro (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)

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

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease ligand decrease pulp processing ) OR ( decrease AND decrease during depressed ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease ligand decrease pulp processing ) OR ( decrease and decrease during depressed ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease ligand decrease pulp processing ) OR ( decrease and decrease during depressed ))*.