Perhaps you should try some spelling variations:
"_ we decrease" » "_ _ decrease" (Expand Search), "_ w_ decrease" (Expand Search), "_ w_ decreased" (Expand Search), "_ w_ decreases" (Expand Search)
"50 nn decrease" » "50 _ decrease" (Expand Search)
"_ e decrease" » "_ _ decrease" (Expand Search), "_ _ decreased" (Expand Search), "_ _ decreases" (Expand Search)
"5 a decrease" » "5 _ decrease" (Expand Search), "5 _ decreased" (Expand Search), "5 _ decreases" (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: "((((((\"_ we decrease\") OR (\"_ e decrease\"))) OR (\"5 a decrease\"))) OR (\"50 nn decrease\"))~".
• Removing quotes may allow a broader search: (((((( _ we decrease ) OR ( _ e decrease ))) OR ( 5 a decrease ))) OR ( 50 nn decrease ))~.
• Adding a wildcard symbol may retrieve word variants: (((((("_ we decrease") OR ("_ e decrease"))) OR ("5 a decrease"))) OR ("50 nn decrease"))*.