Perhaps you should try some spelling variations:
method affects » method effects (Expand search), methods affect (Expand search), method effect (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 low » decreases low (Expand search), decreases flow (Expand search), decrease of (Expand search)
low decrease » flow decrease (Expand search), loss decrease (Expand search), to 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 OR decrease treg decrease ) OR ( decrease low decrease method affects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease OR decrease treg decrease ) OR ( decrease low decrease method affects ))*.