Perhaps you should try some spelling variations:
step decrease » sizes decrease (Expand Search), teer decrease (Expand Search), we decrease (Expand Search)
nn decrease » mean decrease (Expand Search), gy decreased (Expand Search), b1 decreased (Expand Search)
a decrease » _ decreased (Expand Search), _ decreases (Expand Search)
_ decrease » _ decreased (Expand Search)
50 nn » 50 ns (Expand Search), 50 ng (Expand Search), 50 n (Expand Search)
50 a » 50 μ (Expand Search), 50 _ (Expand Search), 50 c (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 nn decrease ) OR ( 50 a decrease ))) OR ( 5 ((step decrease) OR (_ decrease)) ))~".
• Adding a wildcard symbol may retrieve word variants: (((( 50 nn decrease ) OR ( 50 a decrease ))) OR ( 5 ((step decrease) OR (_ decrease)) ))*.