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 with » decreases with (Expand search), increase with (Expand search), decrease in (Expand search)
with decrease » with decreased (Expand search), with deceased (Expand search), with increase (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease the (Expand search)
and decrease » and decreases (Expand search), and decreased (Expand search), and increase (Expand search)
decrease of » decrease in (Expand search)
of monsters » of ministers (Expand search), of masters (Expand search), of monitors (Expand search)

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease their decrease with decrease ) OR ( decrease AND decrease of monsters ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease their decrease with decrease ) OR ( decrease and decrease of monsters ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease their decrease with decrease ) OR ( decrease and decrease of monsters ))*.