Talvez deva tentar algumas variações de ortografia:
efficiency algorithm » efficient algorithm (Expandir a busca), efficient algorithms (Expandir a busca)
math programming » fetal programming (Expandir a busca), goal programming (Expandir a busca), gpu programming (Expandir a busca)
cost efficiency » eco efficiency (Expandir a busca), of efficiency (Expandir a busca), food efficiency (Expandir a busca)
programming on » programming of (Expandir a busca), programming in (Expandir a busca), programming and (Expandir a busca)
algorithm and » algorithms and (Expandir a busca), algorithm _ (Expandir a busca)
on computer » one computer (Expandir a busca), of computer (Expandir a busca), in computer (Expandir a busca)
java cost » java code (Expandir a busca)
and math » and mata (Expandir a busca), and mato (Expandir a busca), and mass (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 java cost efficiency algorithm AND math programming on computer~.
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: java java cost efficiency algorithm and math programming on computer*.