Perhaps you should try some spelling variations:
"59 nn decrease" » "59 _ decrease" (Expand Search), "59 a decrease" (Expand Search), "59 mean decrease" (Expand Search), "59 n_ decrease" (Expand Search), "59 na decrease" (Expand Search), "59 n_ decreased" (Expand Search)
"10 ng decrease" » "10 _ decrease" (Expand Search), "10 a decrease" (Expand Search), "10 we decrease" (Expand Search), "100 ng decrease" (Expand Search), "10 mg decrease" (Expand Search), "10 nm decrease" (Expand Search)
"50 n decrease" » "50 _ decrease" (Expand Search), "50 a decrease" (Expand Search), "50 _ decreased" (Expand Search), "50 ns decrease" (Expand Search), "50 ng decrease" (Expand Search), "50 μ 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: "((\"59 nn decrease\") OR (((\"50 n decrease\") OR (\"10 ng decrease\"))))~".
• Removing quotes may allow a broader search: (( 59 nn decrease ) OR ((( 50 n decrease ) OR ( 10 ng decrease ))))~.
• Adding a wildcard symbol may retrieve word variants: (("59 nn decrease") OR ((("50 n decrease") OR ("10 ng decrease"))))*.