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 mode » decrease model (Expand search), decrease sod (Expand search), decreased bone (Expand search)
decrease toc » decrease of (Expand search), decrease the (Expand search), decreased to (Expand search)
toc decrease » to decrease (Expand search), the decrease (Expand search), not decrease (Expand search)
decrease β » decrease _ (Expand search), decrease in (Expand search), decrease of (Expand search)
β decrease » _ decrease (Expand search), α decrease (Expand search), l decrease (Expand search)
mode effect » mode effects (Expand search), model effects (Expand search), models effect (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 β decrease ) OR ( decrease toc decrease mode effect ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease their decrease β decrease ) OR ( decrease toc decrease mode effect ))*.