Talvez deva tentar algumas variações de ortografia:
optimization algorithm » optimization algorithms (Expandir a busca)
chain optimization » gain optimization (Expandir a busca), caving optimization (Expandir a busca), coding optimization (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)
routine cold » routine child (Expandir a busca), routine and (Expandir a busca), routine care (Expandir a busca)
cold chain » food chain (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: routine cold chain optimization algorithm AND elasticity theory python computer~.
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: routine cold chain optimization algorithm and elasticity theory python computer*.