Talvez deva tentar algumas variações de ortografia:
optimization algorithms » approximation algorithms (Expandir a busca)
position optimization » production optimization (Expandir a busca), operation optimization (Expandir a busca), functions optimization (Expandir a busca)
elasticity theory » activity theory (Expandir a busca)
algorithms and » algorithms _ (Expandir a busca)
and elasticity » and plasticity (Expandir a busca), and electricity (Expandir a busca), of elasticity (Expandir a busca)
theory python » the python (Expandir a busca), theory method (Expandir a busca)
and position » and deposition (Expandir a busca), and positive (Expandir a busca), and composition (Expandir a busca)
routine and » routines and (Expandir a busca), routing and (Expandir a busca), routine care (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 AND position optimization algorithms AND elasticity theory python computer~.
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: routine and position optimization algorithms and elasticity theory python computer*.