Talvez deva tentar algumas variações de ortografia:
crossing sampling » crossing among (Expandir a busca), changing sampling (Expandir a busca), crossing modeling (Expandir a busca)
user programming » based programming (Expandir a busca), pair programming (Expandir a busca), linear programming (Expandir a busca)
coder crossing » border crossing (Expandir a busca), border crossings (Expandir a busca), borders crossing (Expandir a busca)
python coding » action coding (Expandir a busca), python code (Expandir a busca)
coding python » codigo python (Expandir a busca), codigos python (Expandir a busca), using python (Expandir a busca)
sampling user » sampling used (Expandir a busca), sampling under (Expandir a busca), sampling cluster (Expandir a busca)
coder python » codigo python (Expandir a busca), compra python (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( coder python coding python programming ) OR ( coder crossing sampling user programming ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( coder python coding python programming ) OR ( coder crossing sampling user programming ))*.