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