Talvez deva tentar algumas variações de ortografia:
function validation » functional validation (Expandir a busca), function variation (Expandir a busca), function valorization (Expandir a busca)
validation method » valuation method (Expandir a busca), evaluation method (Expandir a busca), valuation methods (Expandir a busca)
coder function » modern function (Expandir a busca), power function (Expandir a busca), over function (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
coder coder » coder decoder (Expandir a busca), code code (Expandir a busca), decoder codec (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coder coder function validation method ) OR ( api python python python programming ))~.