Perhaps you should try some spelling variations:
decrease ratio » decreased ratio (Expand search), decrease at (Expand search), decreased rate (Expand search)
ratio decrease » to decrease (Expand search), rats decreases (Expand search)
piton python » pitons python (Expand search), in python (Expand search), with python (Expand search)
decrease of » decrease in (Expand search)
of progress » in progress (Expand search)
python code » python coding (Expand search), python redes (Expand search)
code piton » code position (Expand search)

You may be able to get more results by adjusting your search query.

• Removing quotes may allow a broader search: (( decrease ratio decrease of progress ) OR ( python code piton python programming ))~.