Perhaps you should try some spelling variations:
position python » position method (Expand search), piton python (Expand search), position methods (Expand search)
qcd processes » qed processes (Expand search), and processes (Expand search), bed processes (Expand search)
code position » coda position (Expand search), bone position (Expand search), cage position (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
and diseases » and disease (Expand search)
diseases qcd » diseases and (Expand search), diseases ace (Expand search), diseases asd (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 AND diseases qcd processes ) OR ( python code position python programming ))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(( decrease and diseases qcd processes ) OR ( python code position python programming ))~".
• Adding a wildcard symbol may retrieve word variants: (( decrease and diseases qcd processes ) OR ( python code position python programming ))*.