Perhaps you should try some spelling variations:
cooperation process » cooperative process (Expand search), operation process (Expand search), cooperation projects (Expand search)
decrease drugs » disease drugs (Expand search), decrease treg (Expand search), release drugs (Expand search)
drugs decrease » drugs increases (Expand search), drugs release (Expand search)
decrease pro » decrease or (Expand search), decrease food (Expand search), decrease treg (Expand search)
pro defense » from defense (Expand search), agro defense (Expand search), to defense (Expand search)
decrease at » decrease akt (Expand search), decrease and (Expand search), decrease in (Expand search)
at decrease » rate decrease (Expand search), that decrease (Expand search), and 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 pro defense cooperation process ) OR ( decrease drugs decrease at decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease pro defense cooperation process ) OR ( decrease drugs decrease at decrease ))*.