Talvez deva tentar algumas variações de ortografia:
spectrum approximation » term approximation (Expandir a busca), medium approximation (Expandir a busca)
network computation » networks computation (Expandir a busca), network population (Expandir a busca), network composition (Expandir a busca)
activities theory » activity theory (Expandir a busca), activities through (Expandir a busca), activities score (Expandir a busca)
algorithms and » algorithms _ (Expandir a busca)
and activities » of activities (Expandir a busca), daily activities (Expandir a busca), human activities (Expandir a busca)
theory network » the network (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 approximation algorithms and activities theory network computation~.
• Caso esteja tentando utilizar os operadores booleanos, deve escrevê-los em Letras MAIÚSCULAS: routine AND spectrum approximation algorithms AND activities theory network computation.
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: routine and spectrum approximation algorithms and activities theory network computation*.