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