Perhaps you should try some spelling variations:
"50 ng decrease" » "50 _ decrease" (Expand Search), "10 ng decrease" (Expand Search), "50 μg decrease" (Expand Search)
"5 wt decrease" » "5 _ decrease" (Expand Search), "5 ht decrease" (Expand Search), "2 wt decrease" (Expand Search), "i wt decrease" (Expand Search)
"_ wt decrease" » "_ _ decrease" (Expand Search)
"59 a decrease" » "59 _ decrease" (Expand Search), "59 _ decreased" (Expand Search), "59 _ decreases" (Expand Search), "19 a decrease" (Expand Search), "5 a decrease" (Expand Search), "9 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: (((("59 a decrease") OR ("50 ng decrease"))) OR ((("5 wt decrease") OR ("_ wt decrease"))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"59 a decrease\") OR (\"50 ng decrease\"))) OR (((\"5 wt decrease\") OR (\"_ wt decrease\"))))".
• Removing quotes may allow a broader search: (((( 59 a decrease ) OR ( 50 ng decrease ))) OR ((( 5 wt decrease ) OR ( _ wt decrease )))).
• Adding a wildcard symbol may retrieve word variants: (((("59 a decrease") OR ("50 ng decrease"))) OR ((("5 wt decrease") OR ("_ wt decrease"))))*.