Perhaps you should try some spelling variations:
"5 we decrease" » "5 _ decrease" (Expand Search), "5 nn decrease" (Expand Search), "5 mean decrease" (Expand Search), "5 wt decrease" (Expand Search), "5 w decrease" (Expand Search), "5 e decrease" (Expand Search)
"_ we decrease" » "_ _ decrease" (Expand Search), "_ nn decrease" (Expand Search), "_ mean decrease" (Expand Search), "_ web decrease" (Expand Search), "_ wet decrease" (Expand Search), "_ e decrease" (Expand Search)
"50 a decrease" » "50 _ decrease" (Expand Search), "50 _ decreased" (Expand Search), "50 _ decreases" (Expand Search), "50 μ decrease" (Expand Search), "50 c decrease" (Expand Search)
"50 n decrease" » "50 nn decrease" (Expand Search), "50 _ decrease" (Expand Search), "50 _ decreased" (Expand Search), "50 ns decrease" (Expand Search), "50 ng decrease" (Expand Search), "50 μ decrease" (Expand Search)

Try widening your search to All Fields.

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 ((((("5 we decrease") OR ("_ we decrease"))) OR ("50 n decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"50 a decrease\") OR (((((\"5 we decrease\") OR (\"_ we decrease\"))) OR (\"50 n decrease\"))))".
• Removing quotes may allow a broader search: (( 50 a decrease ) OR ((((( 5 we decrease ) OR ( _ we decrease ))) OR ( 50 n decrease )))).
• Adding a wildcard symbol may retrieve word variants: (("50 a decrease") OR ((((("5 we decrease") OR ("_ we decrease"))) OR ("50 n decrease"))))*.