Perhaps you should try some spelling variations:
decrease yiel » decreases yield (Expand search), decrease il (Expand search), increase yield (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search)
the decrease » and decrease (Expand search)
yiel pattern » yield pattern (Expand search), diel pattern (Expand search), diel patterns (Expand search)
decrease to » decreased to (Expand search), decrease toc (Expand search), decrease pro (Expand search)
decrease of » decrease in (Expand search)
of decrease » or decrease (Expand search), not decrease (Expand search), of decree (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 the decrease to decrease ) OR ( decrease of decrease yiel pattern ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease the decrease to decrease ) OR ( decrease of decrease yiel pattern ))*.