Perhaps you should try some spelling variations:
"50 ms decrease" » "50 _ decrease" (Expand Search)
"_ fe decrease" » "_ _ decrease" (Expand Search), "_ e decrease" (Expand Search)
"5 wt decrease" » "5 _ decrease" (Expand Search), "_ wt decrease" (Expand Search), "5 ht decrease" (Expand Search), "2 wt decrease" (Expand Search)
"i wt decrease" » "i _ decrease" (Expand Search), "_ wt decrease" (Expand Search), "i et decrease" (Expand Search), "2 wt decrease" (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: "((\"50 ms decrease\") OR (((\"_ fe decrease\") OR (((\"5 wt decrease\") OR (\"i wt decrease\"))))))~".
• Removing quotes may allow a broader search: (( 50 ms decrease ) OR ((( _ fe decrease ) OR ((( 5 wt decrease ) OR ( i wt decrease ))))))~.
• Adding a wildcard symbol may retrieve word variants: (("50 ms decrease") OR ((("_ fe decrease") OR ((("5 wt decrease") OR ("i wt decrease"))))))*.