Perhaps you should try some spelling variations:
physical processes » chemical processes (Expand search), physical properties (Expand search), historical processes (Expand search)
decrease physical » increase physical (Expand search), increased physical (Expand search), increases physical (Expand search)
decrease burden » disease burden (Expand search), decrease further (Expand search)
burden disease » bursal disease (Expand search)
decrease will » decrease with (Expand search), decrease cell (Expand search), decrease il (Expand search)
rate decrease » rats decreases (Expand search), rate increase (Expand search), to decrease (Expand search)
disease rate » disease rat (Expand search), disease rats (Expand search), disease rare (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 will decrease physical processes ) OR ( decrease burden disease rate decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease will decrease physical processes ) OR ( decrease burden disease rate decrease ))*.