Perhaps you should try some spelling variations:
"5 ppm decrease" » "5 _ decrease" (Expand Search), "5 a decrease" (Expand Search), "5 nn decrease" (Expand Search)
"50 ns decrease" » "50 nn decrease" (Expand Search), "50 _ decrease" (Expand Search), "50 a decrease" (Expand Search), "50 ms decrease" (Expand Search), "50 ngs decrease" (Expand Search), "50 μs decrease" (Expand Search), "50 _s decrease" (Expand Search)
"5 we decrease" » "5 _ decrease" (Expand Search), "5 a decrease" (Expand Search), "5 nn decrease" (Expand Search), "_ we decrease" (Expand Search), "5 wt decrease" (Expand Search), "5 w decrease" (Expand Search)
"50 n decrease" » "50 nn decrease" (Expand Search), "50 _ decrease" (Expand Search), "50 a decrease" (Expand Search), "50 ng decrease" (Expand Search), "50 μ 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: (("5 ppm decrease") OR ((((("50 n decrease") OR ("50 ns decrease"))) OR ("5 we decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"5 ppm decrease\") OR (((((\"50 n decrease\") OR (\"50 ns decrease\"))) OR (\"5 we decrease\"))))".
• Removing quotes may allow a broader search: (( 5 ppm decrease ) OR ((((( 50 n decrease ) OR ( 50 ns decrease ))) OR ( 5 we decrease )))).
• Adding a wildcard symbol may retrieve word variants: (("5 ppm decrease") OR ((((("50 n decrease") OR ("50 ns decrease"))) OR ("5 we decrease"))))*.