Perhaps you should try some spelling variations:
decrease serious » decreases anxious (Expand search), decreases serum (Expand search), decreased serum (Expand search)
serious problems » serious problem (Expand search), series problems (Expand search), serious trobles (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
ctn decrease » can decrease (Expand search), to decrease (Expand search), on decrease (Expand search)
python code » python coding (Expand search), python redes (Expand search)
code python » codigo python (Expand search), pacote python (Expand search)
code ctn » code an (Expand search), code cpc (Expand search)

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

• Removing quotes may allow a broader search: (( code ctn decrease serious problems ) OR ( python code python python programming ))~.