Perhaps you should try some spelling variations:
decreases processes » decrease processes (Expand search)
methods validation » method validation (Expand search)
validation program » valuation program (Expand search), vaccination program (Expand search), calibration program (Expand search)
disease decreases » disease increased (Expand search), disease cases (Expand search), disease disease (Expand search)
decrease at » decrease akt (Expand search), decrease and (Expand search), decrease in (Expand search)
at disease » cat diseases (Expand search), rot disease (Expand search), heart disease (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 at disease decreases processes ) OR ( python _ methods validation program ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease at disease decreases processes ) OR ( python _ methods validation program ))*.