Perhaps you should try some spelling variations:
decrease legal » decrease fetal (Expand search), decrease renal (Expand search), increase legal (Expand search)
increase risk » increased risk (Expand search)
risk decrease » risk decreases (Expand search), risk increase (Expand search), break decrease (Expand search)
decrease cell » decreases cell (Expand search)
cell decrease » cells decrease (Expand search), cells decreases (Expand search), will decrease (Expand search)
legal object » legal abject (Expand search), legal subject (Expand search), real object (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not 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: "(( increase risk decrease of decrease ) OR ( decrease cell decrease legal object ))~".
• Adding a wildcard symbol may retrieve word variants: (( increase risk decrease of decrease ) OR ( decrease cell decrease legal object ))*.