Perhaps you should try some spelling variations:
"50 cn decrease" » "50 nn decrease" (Expand Search), "50 a decrease" (Expand Search), "50 c decreased" (Expand Search), "50 cm decrease" (Expand Search), "50 n decrease" (Expand Search), "5b cn decrease" (Expand Search), "5 cn decrease" (Expand Search), "50 μn decrease" (Expand Search), "20 cn decrease" (Expand Search)
"50 ns decrease" » "50 nn decrease" (Expand Search), "50 a decrease" (Expand Search), "50 we decrease" (Expand Search), "50 ms decrease" (Expand Search)
"50 c decrease" » "50 c decreased" (Expand Search), "50 a decrease" (Expand Search), "50 rc decreased" (Expand Search), "5 c decrease" (Expand Search), "50 μ decrease" (Expand Search), "20 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 cn decrease") OR ((((("50 c decrease") OR ("50 ns decrease"))) OR ("50 _ decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"50 cn decrease\") OR (((((\"50 c decrease\") OR (\"50 ns decrease\"))) OR (\"50 _ decrease\"))))".
• Removing quotes may allow a broader search: (( 50 cn decrease ) OR ((((( 50 c decrease ) OR ( 50 ns decrease ))) OR ( 50 _ decrease )))).
• Adding a wildcard symbol may retrieve word variants: (("50 cn decrease") OR ((((("50 c decrease") OR ("50 ns decrease"))) OR ("50 _ decrease"))))*.