Talvez deva tentar algumas variações de ortografia:
estimation algorithms » optimization algorithms (Expandir a busca), optimization algorithm (Expandir a busca), approximation algorithms (Expandir a busca)
spectrum estimation » spectrum optimization (Expandir a busca), section estimation (Expandir a busca), spectrum simulation (Expandir a busca)
networks computing » networks computer (Expandir a busca)
elasticity theory » activity theory (Expandir a busca)
theory networks » aleatory networks (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)
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.

• Fazer uma busca fuzzy pode resultar em termos de grafias semelhantes: routine and spectrum estimation algorithms and elasticity theory networks computing~.
• Caso esteja tentando utilizar os operadores booleanos, deve escrevê-los em Letras MAIÚSCULAS: routine AND spectrum estimation algorithms AND elasticity theory networks computing.
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: routine and spectrum estimation algorithms and elasticity theory networks computing*.