Talvez deva tentar algumas variações de ortografia:
vpython collisions » vpython colisoes (Expandir a busca), proton collisions (Expandir a busca), photon collisions (Expandir a busca)
collisions python » collisions within (Expandir a busca), collisions with (Expandir a busca), collisions on (Expandir a busca)
python python » pythons python (Expandir a busca), pitons python (Expandir a busca), pytm python (Expandir a busca)
code vpython » 3d vpython (Expandir a busca)
piton python » pitons python (Expandir a busca), in python (Expandir a busca), with python (Expandir a busca)
code code » code cdc (Expandir a busca)
lua » luta (Expandir a busca), luna (Expandir a busca), lula (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( code code vpython collisions python ) OR ( lua piton python python programming ))~.