Perhaps you should try some spelling variations:
disease processes » disease process (Expand search), disease progress (Expand search), these processes (Expand search)
decrease theory » decrease their (Expand search), decrease the (Expand search), decreased memory (Expand search)
disease disease » diseases disease (Expand search)
theory disease » their disease (Expand search), theory distance (Expand search), therapy disease (Expand search)
piton python » pitons python (Expand search), in python (Expand search), with python (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 theory disease disease processes ) OR ( python exact piton python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease theory disease disease processes ) OR ( python exact piton python programming ))*.