Perhaps you should try some spelling variations:
custo programavel » tensao programavel (Expand search), filtro programavel (Expand search), pulsos programavel (Expand search)
prevent decrease » prevents increase (Expand search), prevents increased (Expand search), elements decrease (Expand search)
decrease custo » decrease costs (Expand search), decrease std (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
code prevent » code precedent (Expand search), pode prevenir (Expand search), could prevent (Expand search)
python redes » python regius (Expand search), python code (Expand search)
redes python » reais python (Expand search), redes pon (Expand search), dados python (Expand search)

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

• Removing quotes may allow a broader search: (( code prevent decrease custo programavel ) OR ( python redes python python programming ))~.