Talvez deva tentar algumas variações de ortografia:
python sampling » method sampling (Expandir a busca), thin sampling (Expandir a busca), methods sampling (Expandir a busca)
sampling method » sampling methods (Expandir a busca)
method problems » method process (Expandir a busca)
coder python » codigo python (Expandir a busca), compra python (Expandir a busca)
piton python » pitons python (Expandir a busca), in python (Expandir a busca), with python (Expandir a busca)
in piton » in pigeon (Expandir a busca), in pinion (Expandir a busca), in pictou (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coder python sampling method problems ) OR ( using in piton python programming ))~.