Perhaps you should try some spelling variations:
"50 nn decrease" » "50 _ decrease" (Expand Search), "50 a decrease" (Expand Search), "50 mean decrease" (Expand Search), "50 ng decrease" (Expand Search), "50 n decrease" (Expand Search), "59 nn decrease" (Expand Search)
"50 ns decrease" » "50 _ decrease" (Expand Search), "50 a decrease" (Expand Search), "50 we decrease" (Expand Search), "50 ms decrease" (Expand Search)
"5 ng decrease" » "5 _ decrease" (Expand Search), "5 a decrease" (Expand Search), "5 we decrease" (Expand Search), "5 mg decrease" (Expand Search), "5 g decrease" (Expand Search), "5 nm decrease" (Expand Search)
"50 μ decrease" » "50 _ decrease" (Expand Search), "50 a decrease" (Expand Search), "50 _ decreased" (Expand Search), "10 μ decrease" (Expand Search), "5 μ decrease" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("50 nn decrease") OR ("50 ns decrease"))) OR ("5 ng decrease"))) OR ("50 μ decrease"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"50 nn decrease\") OR (\"50 ns decrease\"))) OR (\"5 ng decrease\"))) OR (\"50 μ decrease\"))".
• Removing quotes may allow a broader search: (((((( 50 nn decrease ) OR ( 50 ns decrease ))) OR ( 5 ng decrease ))) OR ( 50 μ decrease )).
• Adding a wildcard symbol may retrieve word variants: (((((("50 nn decrease") OR ("50 ns decrease"))) OR ("5 ng decrease"))) OR ("50 μ decrease"))*.