Talvez deva tentar algumas variações de ortografia:
estimation algorithms » optimization algorithms (Expandir a busca), optimization algorithm (Expandir a busca), approximation algorithms (Expandir a busca)
optimal estimation » optimal designation (Expandir a busca), optimal taxation (Expandir a busca), arrival estimation (Expandir a busca)
algorithms in » algorithms and (Expandir a busca), algorithms _ (Expandir a busca), algorithms to (Expandir a busca)
in elasticity » and elasticity (Expandir a busca), of elasticity (Expandir a busca), soil elasticity (Expandir a busca)
routine and » routines and (Expandir a busca), routing and (Expandir a busca), route and (Expandir a busca)
and optimal » and optical (Expandir a busca), and optimize (Expandir a busca)
of python » _ python (Expandir a busca), of pathos (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 optimal estimation algorithms in elasticity of python computer~.
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: routine and optimal estimation algorithms in elasticity of python computer*.