Talvez deva tentar algumas variações de ortografia:
vpython collisions » vpython colisoes (Expandir a busca), proton collisions (Expandir a busca), photon collisions (Expandir a busca)
decrease processes » disease processes (Expandir a busca), defense processes (Expandir a busca), decay processes (Expandir a busca)
decrease decrease » decrease release (Expandir a busca), disease decreases (Expandir a busca), decrease sucrose (Expandir a busca)
collisions and » collisions at (Expandir a busca), collisions in (Expandir a busca), collections and (Expandir a busca)
and python » in python (Expandir a busca), on python (Expandir a busca), api python (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Caso esteja tentando utilizar os operadores booleanos, deve escrevê-los em Letras MAIÚSCULAS: (( decrease NOT decrease decrease processes ) OR ( vpython collisions AND python programming ))~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( decrease NOT decrease decrease processes ) OR ( vpython collisions and python programming ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( decrease NOT decrease decrease processes ) OR ( vpython collisions and python programming ))*.