Perhaps you should try some spelling variations:
decreases yield » increases yield (Expand search), decreases cell (Expand search), decreases il (Expand search)
owing decreases » logging decreases (Expand search), ageing decreases (Expand search), taping decreases (Expand search)
decrease owing » decrease lodging (Expand search), decrease during (Expand search), decrease in (Expand search)
decrease rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
rate decrease » rats decreases (Expand search), rate increase (Expand search), to decrease (Expand search)
yield objects » field objects (Expand search), fields objects (Expand search), field object (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not 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: "(( decrease rate decrease of decrease ) OR ( decrease owing decreases yield objects ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease rate decrease of decrease ) OR ( decrease owing decreases yield objects ))*.