Perhaps you should try some spelling variations:
optimum processing » optimum pressing (Expand search), minimum processing (Expand search), optical processing (Expand search)
discrete optimum » discrete optimal (Expand search), discrete maximum (Expand search), discrete time (Expand search)
decrease that » decrease the (Expand search), decrease at (Expand search), decrees that (Expand search)
that discrete » at discrete (Expand search), chain discrete (Expand search), fast discrete (Expand search)
in decrease » in decreased (Expand search), on decrease (Expand search), pain decrease (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 that discrete optimum processing ) OR ( decrease in decrease of decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease that discrete optimum processing ) OR ( decrease in decrease of decrease ))*.