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