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 cots » decrease costs (Expand search), decrease its (Expand search), decrease total (Expand search)
decrease β » decrease in (Expand search), decrease of (Expand search), decrease at (Expand search)
β decrease » α decrease (Expand search), l decrease (Expand search), to decrease (Expand search)
cots based » dots based (Expand search), cots baseado (Expand search), plots based (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 their decrease _ decrease ) OR ( decrease β decrease cots based ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease their decrease _ decrease ) OR ( decrease β decrease cots based ))*.