Perhaps you should try some spelling variations:
decrease further » increase further (Expand search), disease further (Expand search), decrease the (Expand search)
further decrease » further increase (Expand search), faster decrease (Expand search), the decrease (Expand search)
decreased sound » decreased bone (Expand search), decreased and (Expand search), decreased food (Expand search)
on decreased » in decreased (Expand search), of decreased (Expand search), on deceased (Expand search)
sound object » sound objects (Expand search), and object (Expand search)
decrease on » decrease in (Expand search), decrease of (Expand search), decrease or (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: "(( decrease OR decrease further decrease ) OR ( decrease on decreased sound object ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease OR decrease further decrease ) OR ( decrease on decreased sound object ))*.