Perhaps you should try some spelling variations:
"10 ng decrease" » "10 _ decrease" (Expand Search), "100 ng decrease" (Expand Search), "10 μg decrease" (Expand Search)
"2 wt decrease" » "2 _ decrease" (Expand Search), "_ wt decrease" (Expand Search), "i wt decrease" (Expand Search)
"5 a decrease" » "5 _ decrease" (Expand Search), "5 _ decreased" (Expand Search), "5 _ decreases" (Expand Search)
"_ e decrease" » "_ _ decrease" (Expand Search), "_ _ decreased" (Expand Search), "_ _ decreases" (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: "((\"5 a decrease\") OR (((\"10 ng decrease\") OR (((\"_ e decrease\") OR (\"2 wt decrease\"))))))~".
• Removing quotes may allow a broader search: (( 5 a decrease ) OR ((( 10 ng decrease ) OR ((( _ e decrease ) OR ( 2 wt decrease ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("5 a decrease") OR ((("10 ng decrease") OR ((("_ e decrease") OR ("2 wt decrease"))))))*.