Perhaps you should try some spelling variations:
field processing » feed processing (Expand search), food processing (Expand search), seed processing (Expand search)
decrease field » decreases yield (Expand search), increase field (Expand search), decrease lipid (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and increase » and increases (Expand search), and increased (Expand search)
increase akt » increase at (Expand search), increase fast (Expand search), increase gait (Expand search)
akt decrease » and decrease (Expand search), not decrease (Expand search), any decrease (Expand search)
decrease on » decrease in (Expand search), decrease of (Expand search), decrease or (Expand search)
on decrease » on decreased (Expand search), of decrease (Expand search), or 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 on decrease field processing ) OR ( decrease AND increase akt decrease ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease on decrease field processing ) OR ( decrease and increase akt decrease ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease on decrease field processing ) OR ( decrease and increase akt decrease ))*.