Perhaps you should try some spelling variations:
"5 we decrease" » "5 _ decrease" (Expand Search), "_ we decrease" (Expand Search)
"_ fe decrease" » "_ _ decrease" (Expand Search), "_ e decrease" (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)
"45 c decrease" » "45 _ decrease" (Expand Search), "45 _ decreased" (Expand Search), "45 _ decreases" (Expand Search)

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (("50 a decrease") OR ((("45 c decrease") OR ((("5 we decrease") OR ("_ fe decrease"))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"50 a decrease\") OR (((\"45 c decrease\") OR (((\"5 we decrease\") OR (\"_ fe decrease\"))))))*".
• Removing quotes may allow a broader search: (( 50 a decrease ) OR ((( 45 c decrease ) OR ((( 5 we decrease ) OR ( _ fe decrease ))))))*.