Talvez deva tentar algumas variações de ortografia:
allocation algorithms » allocation algorithm (Expandir a busca), selection algorithms (Expandir a busca), selection algorithm (Expandir a busca)
networks computation » networks computing (Expandir a busca), networks computer (Expandir a busca)
algorithms using » algorithms in (Expandir a busca), algorithms and (Expandir a busca), algorithms with (Expandir a busca)
using activity » nursing activity (Expandir a busca), buying activity (Expandir a busca), guiding activity (Expandir a busca)
activity and » activity based (Expandir a busca), activity of (Expandir a busca)
and networks » and network (Expandir a busca), area networks (Expandir a busca), food networks (Expandir a busca)
routing » routine (Expandir a busca), routines (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: routing AND spectrum allocation algorithms using activity AND networks computation~.
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: routing and spectrum allocation algorithms using activity and networks computation*.