Perhaps you should try some spelling variations:
"_ cnn decrease" » "_ _ decrease" (Expand Search), "_ c_ decrease" (Expand Search), "_ cns decrease" (Expand Search), "_ can decrease" (Expand Search), "_ ann decrease" (Expand Search)
"_ nn decrease" » "_ _ decrease" (Expand Search), "_ ann decrease" (Expand Search), "_ knn decrease" (Expand Search), "_ rnn decrease" (Expand Search)
"5 a decrease" » "5 _ decrease" (Expand Search), "5 _ decreased" (Expand Search), "5 _ decreases" (Expand Search)
"a fold decrease" » "_ fold decrease" (Expand Search), "5 fold decrease" (Expand Search), "a food 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 ((((("_ nn decrease") OR ("_ cnn decrease"))) OR ("a fold decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"5 a decrease\") OR (((((\"_ nn decrease\") OR (\"_ cnn decrease\"))) OR (\"a fold decrease\"))))".
• Removing quotes may allow a broader search: (( 5 a decrease ) OR ((((( _ nn decrease ) OR ( _ cnn decrease ))) OR ( a fold decrease )))).
• Adding a wildcard symbol may retrieve word variants: (("5 a decrease") OR ((((("_ nn decrease") OR ("_ cnn decrease"))) OR ("a fold decrease"))))*.