Talvez deva tentar algumas variações de ortografia:
allocation algorithm » selection algorithm (Expandir a busca)
special allocation » spectral allocation (Expandir a busca), spatial allocation (Expandir a busca), spectrum allocation (Expandir a busca)
theory python » the python (Expandir a busca), theory method (Expandir a busca)
and activity » and activism (Expandir a busca), and affectivity (Expandir a busca), and activities (Expandir a busca)
abc activity » _ activity (Expandir a busca)
routine and » routines and (Expandir a busca), routing and (Expandir a busca), routine care (Expandir a busca)
and special » and social (Expandir a busca), and spatial (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 special allocation algorithm ((and activity) OR (abc activity)) theory python computer~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "routine and special allocation algorithm ((and activity) OR (abc activity)) theory python computer~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: routine and special allocation algorithm ((and activity) OR (abc activity)) theory python computer*.