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 ns decrease" (Expand Search), "50 ng decrease" (Expand Search), "50 n decrease" (Expand Search)
"50 na decrease" » "50 a decrease" (Expand Search), "50 pa decreased" (Expand Search), "50 la decreased" (Expand Search), "50 ns decrease" (Expand Search), "50 ng decrease" (Expand Search), "50 n 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)
"50 μs decrease" » "10 μs decrease" (Expand Search), "5 μs decrease" (Expand Search)

Try widening your search to All Fields.

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 na decrease"))) OR ((("50 μ decrease") OR ("50 μs decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"50 nn decrease\") OR (\"50 na decrease\"))) OR (((\"50 μ decrease\") OR (\"50 μs decrease\"))))".
• Removing quotes may allow a broader search: (((( 50 nn decrease ) OR ( 50 na decrease ))) OR ((( 50 μ decrease ) OR ( 50 μs decrease )))).
• Adding a wildcard symbol may retrieve word variants: (((("50 nn decrease") OR ("50 na decrease"))) OR ((("50 μ decrease") OR ("50 μs decrease"))))*.