Perhaps you should try some spelling variations:
"10 ng decrease" » "10 nn decrease" (Expand Search), "10 _ decrease" (Expand Search), "10 a decrease" (Expand Search), "100 ng decrease" (Expand Search), "10 mg decrease" (Expand Search), "10 nm decrease" (Expand Search)
"50 mg decrease" » "50 _ decrease" (Expand Search), "50 a decrease" (Expand Search), "50 nn decrease" (Expand Search)
"50 μn decrease" » "50 μnn decrease" (Expand Search), "50 μ_ decrease" (Expand Search), "50 μa decrease" (Expand Search)
"50 n decrease" » "50 nn decrease" (Expand Search), "50 _ decrease" (Expand Search), "50 a decrease" (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 μn decrease") OR ((("10 ng decrease") OR ("50 mg decrease"))))) OR ("50 n decrease"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"50 μn decrease\") OR (((\"10 ng decrease\") OR (\"50 mg decrease\"))))) OR (\"50 n decrease\"))".
• Removing quotes may allow a broader search: (((( 50 μn decrease ) OR ((( 10 ng decrease ) OR ( 50 mg decrease ))))) OR ( 50 n decrease )).
• Adding a wildcard symbol may retrieve word variants: (((("50 μn decrease") OR ((("10 ng decrease") OR ("50 mg decrease"))))) OR ("50 n decrease"))*.