Perhaps you should try some spelling variations:
decrease flying » decrease flooding (Expand search), decrease walking (Expand search), decrease during (Expand search)
decreases blood » increases blood (Expand search)
blood decrease » blood degree (Expand search), blood disease (Expand search), loss decrease (Expand search)
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)
flying objects » moving objects (Expand search), flying insects (Expand search)
decrease can » decrease in (Expand search), decrease and (Expand search), decrease at (Expand search)
can decrease » can increase (Expand search), and 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: "(( decreases blood decrease can decrease ) OR ( decrease their decrease flying objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decreases blood decrease can decrease ) OR ( decrease their decrease flying objects ))*.