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)
decrease integer » decrease catheter (Expandir a busca), decrease after (Expandir a busca), decrease income (Expandir a busca)
integer programs » integer programing (Expandir a busca), integer problems (Expandir a busca), integer programming (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
decrease spp » decrease sod (Expandir a busca), decrease std (Expandir a busca), decrease soon (Expandir a busca)
spp decrease » spp increase (Expandir a busca), speed decrease (Expandir a busca), tip decreases (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease spp decrease integer programs ) OR ( vpython collisions python python programming ))~.