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 cid » collisions in (Expandir a busca), collisions and (Expandir a busca), collisions via (Expandir a busca)
decrease flow » decreases flow (Expandir a busca), decrease low (Expandir a busca), decrease food (Expandir a busca)
flow decrease » flow increase (Expandir a busca), to decrease (Expandir a busca), not decrease (Expandir a busca)
cid python » in python (Expandir a busca), via python (Expandir a busca), and python (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease flow decrease decrease processes ) OR ( vpython collisions cid python programming ))~.