Perhaps you should try some spelling variations:
decreased their » decrease their (Expand search), decreased the (Expand search), decreasing their (Expand search)
their decrease » the decrease (Expand search), their disease (Expand search), the decreased (Expand search)
decrease young » decreases lung (Expand search), decrease on (Expand search), decrease owing (Expand search)
young objects » young subjects (Expand search), sound objects (Expand search), moving objects (Expand search)
in decreased » is decreased (Expand search), in deceased (Expand search), and decreased (Expand search)
decrease may » decrease at (Expand search), decrease by (Expand search), decrease human (Expand search)
may decrease » may increase (Expand search), can decrease (Expand search), to 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: "(( decrease in decreased their decrease ) OR ( decrease may decrease young objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease in decreased their decrease ) OR ( decrease may decrease young objects ))*.