Perhaps you should try some spelling variations:
"5 mean decrease" » "5 a decrease" (Expand Search), "_ mean decrease" (Expand Search), "a mean decrease" (Expand Search), "i mean decrease" (Expand Search)
"5 nn decrease" » "5 a decrease" (Expand Search), "5 gy decreased" (Expand Search), "5 b1 decreased" (Expand Search), "5 non decrease" (Expand Search), "59 nn decrease" (Expand Search), "5 n decrease" (Expand Search)
"5 nm decrease" » "5 a decrease" (Expand Search), "5 we decrease" (Expand Search), "5 gy decreased" (Expand Search), "5 mm decrease" (Expand Search), "5 cm decrease" (Expand Search)

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"5 _ decrease\") OR (((((\"5 nn decrease\") OR (\"5 mean decrease\"))) OR (\"5 nm decrease\"))))~".
• Removing quotes may allow a broader search: (( 5 _ decrease ) OR ((((( 5 nn decrease ) OR ( 5 mean decrease ))) OR ( 5 nm decrease ))))~.
• Adding a wildcard symbol may retrieve word variants: (("5 _ decrease") OR ((((("5 nn decrease") OR ("5 mean decrease"))) OR ("5 nm decrease"))))*.