Perhaps you should try some spelling variations:
position python » position method (Expand search), piton python (Expand search), position methods (Expand search)
they processes » the processes (Expand search), theory processes (Expand search), these processes (Expand search)
diseases they » diseases the (Expand search), diseases their (Expand search), diseases that (Expand search)
and position » and deposition (Expand search), and positive (Expand search), and composition (Expand search)
decrease of » decrease in (Expand search)
of diseases » of disease (Expand search)
python and » python based (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 of diseases they processes ) OR ( python AND position python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease of diseases they processes ) OR ( python and position python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease of diseases they processes ) OR ( python and position python programming ))*.