Talvez deva tentar algumas variações de ortografia:
perception algorithm » percolation algorithms (Expandir a busca), selection algorithm (Expandir a busca), detection algorithm (Expandir a busca)
spatial perception » social perception (Expandir a busca)
elasticity theory » activity theory (Expandir a busca)
and elasticity » and plasticity (Expandir a busca), and electricity (Expandir a busca), of elasticity (Expandir a busca)
algorithm and » algorithms and (Expandir a busca), algorithm _ (Expandir a busca), algorithm to (Expandir a busca)
theory python » the python (Expandir a busca), theory method (Expandir a busca)
computing in » computing and (Expandir a busca), computing _ (Expandir a busca)
in spatial » and spatial (Expandir a busca), of spatial (Expandir a busca), _ spatial (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: computing in spatial perception algorithm AND elasticity theory python computer~.
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: computing in spatial perception algorithm and elasticity theory python computer*.