Perhaps you should try some spelling variations:
"10 μ decrease" » "10 _ decrease" (Expand Search), "10 _ decreased" (Expand Search), "10 _ decreases" (Expand Search)
"50 μ decrease" » "50 _ decrease" (Expand Search), "50 _ decreased" (Expand Search), "50 _ decreases" (Expand Search), "5 μ decrease" (Expand Search)
"50 ng decrease" » "50 nn decrease" (Expand Search), "50 _ decrease" (Expand Search), "50 we decrease" (Expand Search), "50 mg decrease" (Expand Search), "10 ng decrease" (Expand Search), "5 ng decrease" (Expand Search)
"50 a decrease" » "50 _ decrease" (Expand Search), "50 _ decreased" (Expand Search), "50 _ decreases" (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 a decrease") OR ("10 μ decrease"))) OR ("50 ng decrease"))) OR ("50 μ decrease"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"50 a decrease\") OR (\"10 μ decrease\"))) OR (\"50 ng decrease\"))) OR (\"50 μ decrease\"))".
• Removing quotes may allow a broader search: (((((( 50 a decrease ) OR ( 10 μ decrease ))) OR ( 50 ng decrease ))) OR ( 50 μ decrease )).
• Adding a wildcard symbol may retrieve word variants: (((((("50 a decrease") OR ("10 μ decrease"))) OR ("50 ng decrease"))) OR ("50 μ decrease"))*.