Perhaps you should try some spelling variations:
"50 ns decrease" » "50 nn decrease" (Expand Search), "50 a decrease" (Expand Search), "50 we decrease" (Expand Search), "50 ms decrease" (Expand Search), "50 ngs decrease" (Expand Search), "50 μs decrease" (Expand Search), "50 cs decrease" (Expand Search)
"50 cs decrease" » "50 a decrease" (Expand Search), "50 nn decrease" (Expand Search), "50 c decreased" (Expand Search), "50 cas decrease" (Expand Search), "50 c decrease" (Expand Search), "50 ms decrease" (Expand Search)
"50 n decrease" » "50 nn decrease" (Expand Search), "50 a decrease" (Expand Search), "50 _ decreased" (Expand Search), "50 ng decrease" (Expand Search), "50 μ decrease" (Expand Search), "50 c 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 n decrease") OR ("50 _ decrease"))) OR ((("50 ns decrease") OR ("50 cs decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"50 n decrease\") OR (\"50 _ decrease\"))) OR (((\"50 ns decrease\") OR (\"50 cs decrease\"))))".
• Removing quotes may allow a broader search: (((( 50 n decrease ) OR ( 50 _ decrease ))) OR ((( 50 ns decrease ) OR ( 50 cs decrease )))).
• Adding a wildcard symbol may retrieve word variants: (((("50 n decrease") OR ("50 _ decrease"))) OR ((("50 ns decrease") OR ("50 cs decrease"))))*.