Perhaps you should try some spelling variations:
largest decrease » largest decreases (Expand Search), larger decrease (Expand Search), marked decrease (Expand Search)
values decrease » values increased (Expand Search)
i largest » _ largest (Expand Search), i large (Expand Search)
ct levels » wt levels (Expand Search), cd levels (Expand Search), co levels (Expand Search)
i values » _ values (Expand Search)
c levels » _ levels (Expand Search), 1 levels (Expand Search), 6 levels (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: "(((( i values decrease ) OR ( i largest decrease ))) OR ( ((ct levels) OR (c levels)) increased ))~".
• Adding a wildcard symbol may retrieve word variants: (((( i values decrease ) OR ( i largest decrease ))) OR ( ((ct levels) OR (c levels)) increased ))*.