Perhaps you should try some spelling variations:
position python » position method (Expand search), piton python (Expand search), position methods (Expand search)
decrease spot » decrease sod (Expand search), decrease soon (Expand search), decrease of (Expand search)
and processes » and process (Expand search), and processing (Expand search)
code position » coda position (Expand search), bone position (Expand search), cage position (Expand search)
spot disease » host disease (Expand search), wilt disease (Expand search)
disease and » diseases and (Expand search)
python code » python coding (Expand search), python redes (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 spot disease AND processes ) OR ( python code position python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease spot disease and processes ) OR ( python code position python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease spot disease and processes ) OR ( python code position python programming ))*.