Talvez deva tentar algumas variações de ortografia:
potencial control » potencial controle (Expandir a busca), potencial controlo (Expandir a busca), potential control (Expandir a busca)
control programs » control program (Expandir a busca), control problems (Expandir a busca)
testing methods » costing methods (Expandir a busca), test methods (Expandir a busca), feeding methods (Expandir a busca)
methods python » methods action (Expandir a busca), pythons python (Expandir a busca), methods method (Expandir a busca)
and potencial » and potential (Expandir a busca), and potentials (Expandir a busca), grande potencial (Expandir a busca)
using testing » using resting (Expandir a busca), using nesting (Expandir a busca), ring testing (Expandir a busca)
coder and » code and (Expandir a busca), codes and (Expandir a busca), poder and (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: (( coder AND potencial control programs ) OR ( using testing methods python programming ))~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( coder and potencial control programs ) OR ( using testing methods python programming ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( coder and potencial control programs ) OR ( using testing methods python programming ))*.