Perhaps you should try some spelling variations:
discrete optimum » discrete optimal (Expand search), discrete maximum (Expand search), discrete time (Expand search)
optimum training » optimal training (Expand search), optimum planting (Expand search), optimum spacing (Expand search)
decrease owing » decrease lodging (Expand search), decrease during (Expand search), decrease in (Expand search)
owing discrete » using discrete (Expand search), paying discrete (Expand search), in discrete (Expand search)
decrease pro » decrease food (Expand search), decrease treg (Expand search), decrease in (Expand search)
pro decrease » to decrease (Expand search), or decrease (Expand search), price decrease (Expand search)
decrease the » decreases the (Expand search), decrease in (Expand search), decrease of (Expand search)
the decrease » to decrease (Expand search), and decrease (Expand search), _ 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 owing discrete optimum training ) OR ( decrease pro decrease the decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease owing discrete optimum training ) OR ( decrease pro decrease the decrease ))*.