Perhaps you should try some spelling variations:
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
their decrease » the decrease (Expand search), their disease (Expand search), the decreased (Expand search)
decrease pitch » decrease with (Expand search), decrease its (Expand search), decrease high (Expand search)
decrease limb » decrease lipid (Expand search), decrease liver (Expand search), decrease hiv (Expand search)
limb decrease » will decrease (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: "(( decrease in decrease their decrease ) OR ( decrease limb decrease pitch pattern ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease in decrease their decrease ) OR ( decrease limb decrease pitch pattern ))*.