Perhaps you should try some spelling variations:
nonlinear problem » nonlinear problems (Expand search), linear problems (Expand search)
not decreased » not decrease (Expand search), to decreased (Expand search), not increased (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
python code » python coding (Expand search), python redes (Expand search)
code python » codigo python (Expand search), pacote python (Expand search)
code not » code non (Expand search), code notes (Expand search), code noir (Expand search)

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

• Removing quotes may allow a broader search: (( code not decreased nonlinear problem ) OR ( python code python python programming ))~.