Perhaps you should try some spelling variations:
"5 nn decrease" » "5 _ decrease" (Expand Search), "5 mean decrease" (Expand Search), "5 gy decreased" (Expand Search), "5 n_ decrease" (Expand Search), "5 n_ decreased" (Expand Search), "5 n_ decreases" (Expand Search), "5 non decrease" (Expand Search), "59 nn decrease" (Expand Search), "5 nm decrease" (Expand Search)
"50 n decrease" » "50 _ decrease" (Expand Search), "50 _ decreased" (Expand Search), "50 _ decreases" (Expand Search), "50 ns decrease" (Expand Search), "50 ng decrease" (Expand Search), "50 μ decrease" (Expand Search)
"10 a decrease" » "10 _ decrease" (Expand Search), "10 _ decreased" (Expand Search), "10 _ decreases" (Expand Search), "10 μ decrease" (Expand Search), "19 a decrease" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("5 nn decrease") OR ((("50 n decrease") OR ("10 a decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"5 nn decrease\") OR (((\"50 n decrease\") OR (\"10 a decrease\"))))".
• Removing quotes may allow a broader search: (( 5 nn decrease ) OR ((( 50 n decrease ) OR ( 10 a decrease )))).
• Adding a wildcard symbol may retrieve word variants: (("5 nn decrease") OR ((("50 n decrease") OR ("10 a decrease"))))*.