Perhaps you should try some spelling variations:
their programming » their reprogramming (Expand search), theory programming (Expand search), the 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)
decrease their » decrease the (Expand search), increase their (Expand search), decreases the (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
python api » python and (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 their programming ) OR ( python api python python programming ))~.