Talvez deva tentar algumas variações de ortografia:
effective efficient » effective coefficient (Expandir a busca), effective coefficients (Expandir a busca), effective equipment (Expandir a busca)
efficient coding » efficient routing (Expandir a busca), efficient cement (Expandir a busca)
coder effective » model effective (Expandir a busca), over effective (Expandir a busca), under effective (Expandir a busca)
coding program » cloning program (Expandir a busca), loading program (Expandir a busca), cooling programs (Expandir a busca)
python python » pythons python (Expandir a busca), pitons python (Expandir a busca), pytm python (Expandir a busca)
piton python » pitons python (Expandir a busca), in python (Expandir a busca), with python (Expandir a busca)
and piton » and piston (Expandir a busca), and pion (Expandir a busca), and iton (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 effective efficient coding program ) OR ( AND piton python python programming ))~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( coder effective efficient coding program ) OR ( and piton python python programming ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( coder effective efficient coding program ) OR ( and piton python python programming ))*.