Perhaps you should try some spelling variations:
"100 ng decrease" » "100 _ decrease" (Expand Search), "100 nm decrease" (Expand Search), "10 ng decrease" (Expand Search), "100 mg decrease" (Expand Search)
"_ eb decrease" » "_ _ decrease" (Expand Search), "_ web decrease" (Expand Search), "_ ebv decrease" (Expand Search), "_ ebm decrease" (Expand Search)
"_ we decrease" » "_ _ decrease" (Expand Search), "_ web decrease" (Expand Search), "_ e decrease" (Expand Search), "_ fe decrease" (Expand Search)
"5 a decrease" » "5 _ decrease" (Expand Search), "5 _ decreased" (Expand Search), "5 _ decreases" (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: (("5 a decrease") OR ((("100 ng decrease") OR ((("_ eb decrease") OR ("_ we decrease"))))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"5 a decrease\") OR (((\"100 ng decrease\") OR (((\"_ eb decrease\") OR (\"_ we decrease\"))))))".
• Removing quotes may allow a broader search: (( 5 a decrease ) OR ((( 100 ng decrease ) OR ((( _ eb decrease ) OR ( _ we decrease )))))).
• Adding a wildcard symbol may retrieve word variants: (("5 a decrease") OR ((("100 ng decrease") OR ((("_ eb decrease") OR ("_ we decrease"))))))*.