Talvez deva tentar algumas variações de ortografia:
coder extraction » code extraction (Expandir a busca), copper extraction (Expandir a busca), powder extraction (Expandir a busca)
plc programming » c programming (Expandir a busca), block programming (Expandir a busca), _ programming (Expandir a busca)
extraction plc » extraction hplc (Expandir a busca), extraction ple (Expandir a busca), extraction alp (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)
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 coder extraction plc programming ) OR ( in python python python programming ))~.