Perhaps you should try some spelling variations:
quality processor » quality processes (Expand search), quality process (Expand search), quality processed (Expand search)
decrease quality » increase quality (Expand search), disease quality (Expand search), database quality (Expand search)
decrease loss » decrease costs (Expand search), decrease low (Expand search), decrease blood (Expand search)
loss decrease » loss decreases (Expand search), to decrease (Expand search), of decrease (Expand search)
decrease rate » decreased rate (Expand search), decreases rate (Expand search), decrease at (Expand search)
rate increase » the increase (Expand search), and increase (Expand search), an increase (Expand search)
increase not » increase nbpt (Expand search), increase foot (Expand search), increase n (Expand search)
not decrease » to decrease (Expand search), not increase (Expand search), and decrease (Expand search)

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (( decrease loss decrease quality processor ) OR ( decrease rate increase NOT decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease loss decrease quality processor ) OR ( decrease rate increase not decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease loss decrease quality processor ) OR ( decrease rate increase not decrease ))*.