Talvez deva tentar algumas variações de ortografia:
plickers programming » policies programming (Expandir a busca), plc's programming (Expandir a busca), block programming (Expandir a busca)
using plickers » using vickers (Expandir a busca), using primers (Expandir a busca), using plackett (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)
coder using » coders using (Expandir a busca), cover using (Expandir a busca), code using (Expandir a busca)
of python » _ python (Expandir a busca), in python (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coder coder using plickers programming ) OR ( of python python python programming ))~.