Perhaps you should try some spelling variations:
"5 non decrease" » "5 point decrease" (Expand Search), "5 note decreased" (Expand Search), "5 fold decrease" (Expand Search), "_ non decrease" (Expand Search), "a non decrease" (Expand Search), "e non 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 nn decrease" » "5 _ decrease" (Expand Search), "5 a decrease" (Expand Search), "5 mean decrease" (Expand Search), "59 nn decrease" (Expand Search), "5 nm decrease" (Expand Search), "5 n 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 ns decrease") OR ((("5 nn decrease") OR ("5 non decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"50 ns decrease\") OR (((\"5 nn decrease\") OR (\"5 non decrease\"))))".
• Removing quotes may allow a broader search: (( 50 ns decrease ) OR ((( 5 nn decrease ) OR ( 5 non decrease )))).
• Adding a wildcard symbol may retrieve word variants: (("50 ns decrease") OR ((("5 nn decrease") OR ("5 non decrease"))))*.