Talvez deva tentar algumas variações de ortografia:
efficiency algorithm » efficient algorithm (Expandir a busca), efficient algorithms (Expandir a busca)
programmation python » programacao python (Expandir a busca), programacion piton (Expandir a busca)
grade efficiency » average efficiency (Expandir a busca), grazing efficiency (Expandir a busca), storage efficiency (Expandir a busca)
and grade » and grande (Expandir a busca), and trade (Expandir a busca), and grape (Expandir a busca)
on python » in python (Expandir a busca), of python (Expandir a busca), piton python (Expandir a busca)
java and » java card (Expandir a busca), nova and (Expandir a busca), java 3d (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: java AND grade efficiency algorithm ((on python) OR (_ python)) programmation python computer~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "java and grade efficiency algorithm ((on python) OR (_ python)) programmation python computer~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: java and grade efficiency algorithm ((on python) OR (_ python)) programmation python computer*.