Perhaps you should try some spelling variations:
"100 mg decrease" » "100 _ decrease" (Expand Search), "300 mg decrease" (Expand Search), "100 ng decrease" (Expand Search)
"_ fe decrease" » "_ _ decrease" (Expand Search), "_ f_ decrease" (Expand Search), "_ f_ decreased" (Expand Search), "_ f_ decreases" (Expand Search), "_ e decrease" (Expand Search)
"_ eb decrease" » "_ _ decrease" (Expand Search), "_ web decrease" (Expand Search), "_ ebv decrease" (Expand Search), "_ ebm decrease" (Expand Search)
"5 e decrease" » "5 _ decrease" (Expand Search), "5 _ decreased" (Expand Search), "5 _ 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: "((\"100 mg decrease\") OR (((\"5 e decrease\") OR (((\"_ fe decrease\") OR (\"_ eb decrease\"))))))~".
• Removing quotes may allow a broader search: (( 100 mg decrease ) OR ((( 5 e decrease ) OR ((( _ fe decrease ) OR ( _ eb decrease ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("100 mg decrease") OR ((("5 e decrease") OR ((("_ fe decrease") OR ("_ eb decrease"))))))*.