Perhaps you should try some spelling variations:
decrease quality » increase quality (Expand search), disease quality (Expand search)
cpp decrease » spp decrease (Expand search), can decrease (Expand search), tip decreases (Expand search)
python redes » python regius (Expand search), python code (Expand search)
redes pitons » redes pon (Expand search), redes fito (Expand search), redes ptn (Expand search)
code cpp » code cpc (Expand search), code app (Expand search), code ctn (Expand search)

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

• Removing quotes may allow a broader search: (( code cpp decrease quality program ) OR ( python redes pitons python programming ))~.