Perhaps you should try some spelling variations:
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
skins decrease » statins decrease (Expand search), soil decrease (Expand search), lesions decrease (Expand search)
their disease » the disease (Expand search), hair diseases (Expand search)
disease skins » disease signs (Expand search), disease swine (Expand search), disease twins (Expand search)
decrease not » decrease of (Expand search), decrease akt (Expand search), decrease at (Expand search)
not decrease » to decrease (Expand search), not increase (Expand search), and decrease (Expand search)
decrease key » decrease by (Expand search), decrease cell (Expand search), decrease treg (Expand search)
key process » dry process (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 NOT decrease key process ) OR ( decrease their disease skins decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease not decrease key process ) OR ( decrease their disease skins decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease not decrease key process ) OR ( decrease their disease skins decrease ))*.