Perhaps you should try some spelling variations:
"5 n decrease" » "5 _ decreased" (Expand Search), "5 _ decreases" (Expand Search), "15 n decrease" (Expand Search)
"5 nmon decrease" » "5 nmo_ decreased" (Expand Search), "5 nmo_ decreases" (Expand Search), "15 nmon decrease" (Expand Search), "5 nmol decrease" (Expand Search), "5 mon decrease" (Expand Search), "5 neon decrease" (Expand Search)
"5 non decrease" » "5 no_ decreased" (Expand Search), "5 no_ decreases" (Expand Search), "_ non decrease" (Expand Search), "a non decrease" (Expand Search), "b non decrease" (Expand Search), "15 non 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 n decrease\") OR (((\"5 nmon decrease\") OR (\"5 non decrease\"))))))~".
• Removing quotes may allow a broader search: (( 5 _ decrease ) OR ((( 5 n decrease ) OR ((( 5 nmon decrease ) OR ( 5 non decrease ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("5 _ decrease") OR ((("5 n decrease") OR ((("5 nmon decrease") OR ("5 non decrease"))))))*.