Talvez deva tentar algumas variações de ortografia:
programming classes » programming based (Expandir a busca)
discourse relations » discourse traditions (Expandir a busca)
classes algorithm » clusters algorithm (Expandir a busca), massey algorithm (Expandir a busca), based algorithm (Expandir a busca)
relations within » relations with (Expandir a busca), operations within (Expandir a busca), relation with (Expandir a busca)
within computer » with computer (Expandir a busca), python computer (Expandir a busca), with computers (Expandir a busca)
using python » usando python (Expandir a busca), using paths (Expandir a busca)
in python » via python (Expandir a busca), _ python (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Fazer uma busca fuzzy pode resultar em termos de grafias semelhantes: ((using python) OR (in python)) programming classes algorithm _ discourse relations within computer~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "((using python) OR (in python)) programming classes algorithm _ discourse relations within computer".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: ((using python) OR (in python)) programming classes algorithm _ discourse relations within computer*.