Perhaps you should try some spelling variations:
"50 μ decrease" » "50 _ decrease" (Expand Search), "50 _ decreased" (Expand Search), "50 _ decreases" (Expand Search), "10 μ decrease" (Expand Search), "5 μ decrease" (Expand Search)
"50 ns decrease" » "50 nn decrease" (Expand Search), "50 _ decrease" (Expand Search), "50 use decreased" (Expand Search), "50 ms decrease" (Expand Search)
"50 we decrease" » "50 _ decrease" (Expand Search), "50 nn decrease" (Expand Search), "50 mean decrease" (Expand Search)
"5 a decrease" » "5 _ decrease" (Expand Search), "5 _ decreased" (Expand Search), "5 _ decreases" (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 a decrease") OR ("50 μ decrease"))) OR ((("50 ns decrease") OR ("50 we decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"5 a decrease\") OR (\"50 μ decrease\"))) OR (((\"50 ns decrease\") OR (\"50 we decrease\"))))".
• Removing quotes may allow a broader search: (((( 5 a decrease ) OR ( 50 μ decrease ))) OR ((( 50 ns decrease ) OR ( 50 we decrease )))).
• Adding a wildcard symbol may retrieve word variants: (((("5 a decrease") OR ("50 μ decrease"))) OR ((("50 ns decrease") OR ("50 we decrease"))))*.