Perhaps you should try some spelling variations:
"50 ns decrease" » "50 nn decrease" (Expand Search), "50 _ decrease" (Expand Search), "50 a decrease" (Expand Search)
"50 ms decrease" » "50 _ decrease" (Expand Search), "50 a decrease" (Expand Search), "50 nn decrease" (Expand Search), "50 mg decrease" (Expand Search), "50 mm decrease" (Expand Search)
"5 ng decrease" » "5 nn decrease" (Expand Search), "5 _ decrease" (Expand Search), "5 a decrease" (Expand Search), "5 mg decrease" (Expand Search), "5 g decrease" (Expand Search), "5 nm decrease" (Expand Search)
"50 c decrease" » "50 c decreased" (Expand Search), "50 _ decrease" (Expand Search), "50 a decrease" (Expand Search), "5 c decrease" (Expand Search), "50 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 c decrease") OR ((((("50 ns decrease") OR ("50 ms decrease"))) OR ("5 ng decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"50 c decrease\") OR (((((\"50 ns decrease\") OR (\"50 ms decrease\"))) OR (\"5 ng decrease\"))))*".
• Removing quotes may allow a broader search: (( 50 c decrease ) OR ((((( 50 ns decrease ) OR ( 50 ms decrease ))) OR ( 5 ng decrease ))))*.