Perhaps you should try some spelling variations:
and programming » _ programming (Expand search), goal programming (Expand search)
decrease ratio » decreased ratio (Expand search), decrease at (Expand search), decreased rate (Expand search)
ratio decrease » to decrease (Expand search), rats decreases (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
decrease and » decreases and (Expand search), decrease in (Expand search), decrease of (Expand search)
python lines » cotton lines (Expand search), python redes (Expand search), action lines (Expand search)
lines python » in python (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 and programming ) OR ( python lines python python programming ))~.