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