Perhaps you should try some spelling variations:
decrease sound » decrease sod (Expand search), decrease soon (Expand search), decrease and (Expand search)
decrease fear » decreased fear (Expand search), decrease fetal (Expand search), decreased heart (Expand search)
fear decrease » break decrease (Expand search), merr decreases (Expand search), can decrease (Expand search)
sound objects » and objects (Expand search), sound effects (Expand search), boundary objects (Expand search)
decreased to » decreased the (Expand search), decreased tgf (Expand search), decreased in (Expand search)
in decrease » in decreased (Expand search), on decrease (Expand search), pain 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: "(( decreased to decrease fear decrease ) OR ( decrease in decrease sound objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreased to decrease fear decrease ) OR ( decrease in decrease sound objects ))*.