Talvez deva tentar algumas variações de ortografia:
python challenges » method challenges (Expandir a busca), ethos challenges (Expandir a busca), actions challenges (Expandir a busca)
java programming » and programming (Expandir a busca), based programming (Expandir a busca), goal programming (Expandir a busca)
coder decoder » encoder decoder (Expandir a busca), video decoder (Expandir a busca)
challenges in » challenges and (Expandir a busca), challenges of (Expandir a busca)
python java » python data (Expandir a busca), python capaz (Expandir a busca)
in python » _ python (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coder decoder python java programming ) OR ( python challenges in python programming ))~.