Perhaps you should try some spelling variations:
"_ fe decrease" » "_ _ decrease" (Expand Search), "_ e decrease" (Expand Search)
"5 c decrease" » "5 _ decrease" (Expand Search), "5 _ decreased" (Expand Search), "5 _ decreases" (Expand Search), "45 c decrease" (Expand Search)
"5 a decrease" » "5 _ decrease" (Expand Search), "5 _ decreased" (Expand Search), "5 _ decreases" (Expand Search)
"_ m 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 c decrease\") OR (((\"5 a decrease\") OR (((\"_ m decrease\") OR (\"_ fe decrease\"))))))~".
• Removing quotes may allow a broader search: (( 5 c decrease ) OR ((( 5 a decrease ) OR ((( _ m decrease ) OR ( _ fe decrease ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("5 c decrease") OR ((("5 a decrease") OR ((("_ m decrease") OR ("_ fe decrease"))))))*.