Perhaps you should try some spelling variations:
decrease physical » increase physical (Expand search), increased physical (Expand search), increases physical (Expand search)
physical effect » physical effects (Expand search), physical effort (Expand search), physical neglect (Expand search)
decrease treg » decrease the (Expand search), decrease their (Expand search)
treg decrease » the decrease (Expand search), urea decrease (Expand search), drugs decrease (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 treg decrease NOT decrease ) OR ( decrease at decrease physical effect ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease treg decrease NOT decrease ) OR ( decrease at decrease physical effect ))*.