Perhaps you should try some spelling variations:
"5 ng decrease" » "5 nn decrease" (Expand Search), "5 we decrease" (Expand Search), "5 gy decreased" (Expand Search), "5 ngy decreased" (Expand Search), "5 n_ decreased" (Expand Search), "5 n_ decreases" (Expand Search), "5 mg decrease" (Expand Search), "5 nm decrease" (Expand Search), "5 kg decrease" (Expand Search)
"59 a decrease" » "59 _ decreased" (Expand Search), "59 _ decreases" (Expand Search), "19 a decrease" (Expand Search), "59 0 decrease" (Expand Search), "5 a decrease" (Expand Search)
"5 g decrease" » "5 gy decreased" (Expand Search), "5 _ decreased" (Expand Search), "5 _ decreases" (Expand Search), "5 mg decrease" (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: "((\"50 _ decrease\") OR (((\"59 a decrease\") OR (((\"5 ng decrease\") OR (\"5 g decrease\"))))))~".
• Removing quotes may allow a broader search: (( 50 _ decrease ) OR ((( 59 a decrease ) OR ((( 5 ng decrease ) OR ( 5 g decrease ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("50 _ decrease") OR ((("59 a decrease") OR ((("5 ng decrease") OR ("5 g decrease"))))))*.