Perhaps you should try some spelling variations:
decrease processes » disease processes (Expand search), defense processes (Expand search), decay processes (Expand search)
diseases decrease » diseases decreases (Expand search), disease decreases (Expand search), diseases disease (Expand search)
decrease root » decrease food (Expand search), decrease soon (Expand search), decreasing root (Expand search)
root diseases » foot diseases (Expand search), goat diseases (Expand search), rust diseases (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 root diseases decrease processes ) OR ( python _ pitons python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease root diseases decrease processes ) OR ( python _ pitons python programming ))*.