Perhaps you should try some spelling variations:
"5 ng decrease" » "5 nn decrease" (Expand Search), "5 gy decreased" (Expand Search), "5 b1 decreased" (Expand Search), "5 mg decrease" (Expand Search), "5 g decrease" (Expand Search), "5 nm decrease" (Expand Search)
"5 we decrease" » "5 nn decrease" (Expand Search), "5 mean decrease" (Expand Search), "5 teer decrease" (Expand Search), "_ we decrease" (Expand Search), "5 wt decrease" (Expand Search), "5 w decrease" (Expand Search)
"50 a decrease" » "50 _ decreased" (Expand Search), "50 _ decreases" (Expand Search), "50 μ decrease" (Expand Search), "50 c decrease" (Expand Search), "5 a 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 _ decrease") OR ((((("5 ng decrease") OR ("5 we decrease"))) OR ("50 a decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"50 _ decrease\") OR (((((\"5 ng decrease\") OR (\"5 we decrease\"))) OR (\"50 a decrease\"))))".
• Removing quotes may allow a broader search: (( 50 _ decrease ) OR ((((( 5 ng decrease ) OR ( 5 we decrease ))) OR ( 50 a decrease )))).
• Adding a wildcard symbol may retrieve word variants: (("50 _ decrease") OR ((((("5 ng decrease") OR ("5 we decrease"))) OR ("50 a decrease"))))*.