Perhaps you should try some spelling variations:
nn decrease » _ decrease (Expand Search)
ng decrease » _ decrease (Expand Search)
a decrease » _ decrease (Expand Search), _ decreased (Expand Search), _ decreases (Expand Search)
g decrease » _ decrease (Expand Search), _ decreased (Expand Search), _ decreases (Expand Search)
50 a » 5 a (Expand Search), 50 _ (Expand Search), 50 i (Expand Search)
5 ng » 5 μg (Expand Search)
5 g » 5 μg (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 a decrease ) OR ((( 50 nn decrease ) OR ((( 5 ng decrease ) OR ( 5 g decrease ))))))~".
• Adding a wildcard symbol may retrieve word variants: (( 50 a decrease ) OR ((( 50 nn decrease ) OR ((( 5 ng decrease ) OR ( 5 g decrease ))))))*.