Perhaps you should try some spelling variations:
ns decrease » _ decrease (Expand Search), a decrease (Expand Search), we decrease (Expand Search)
nn decrease » _ decrease (Expand Search), a decrease (Expand Search), mean decrease (Expand Search)
ng decrease » _ decrease (Expand Search), a decrease (Expand Search), we decrease (Expand Search)
c decrease » c decreased (Expand Search), _ decrease (Expand Search), a decrease (Expand Search)
10 ng » 100 ng (Expand Search), 10 mg (Expand Search), 10 nm (Expand Search)
50 c » 5 c (Expand Search), 50 μ (Expand Search), 50 _ (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: "(( 50 ((ns decrease) OR (nn decrease)) ) OR ((( 50 c decrease ) OR ( 10 ng decrease ))))~".
• Adding a wildcard symbol may retrieve word variants: (( 50 ((ns decrease) OR (nn decrease)) ) OR ((( 50 c decrease ) OR ( 10 ng decrease ))))*.