Talvez deva tentar algumas variações de ortografia:
project approximation » problem approximation (Expandir a busca), gradient approximation (Expandir a busca), periodic approximation (Expandir a busca)
objective methods » objective method (Expandir a busca), objective metrics (Expandir a busca), active methods (Expandir a busca)
methods computer » networks computer (Expandir a busca), python computer (Expandir a busca)
algorithms in » algorithms and (Expandir a busca), algorithms _ (Expandir a busca), algorithm _ (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), routine care (Expandir a busca)
and project » and projects (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 project approximation algorithms in elasticity objective methods computer~.
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: routine and project approximation algorithms in elasticity objective methods computer*.