Perhaps you should try some spelling variations:
vpython colisoes » vpython collisions (Expand search)
obra programada » obra programas (Expand search), obra programa (Expand search), obras programacao (Expand search)
colisoes python » colisoes proton (Expand search), codigos python (Expand search), colisoes eletron (Expand search)
decrease obra » decrease or (Expand search), decrease of (Expand search), decrease by (Expand search)
python python » pythons python (Expand search), piton python (Expand search), pitons python (Expand search)
cpp decrease » spp decrease (Expand search), can decrease (Expand search), tip decreases (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 obra programada ) OR ( vpython colisoes python python programming ))~.