Talvez deva tentar algumas variações de ortografia:
code problems » core problems (Expandir a busca), model problems (Expandir a busca), some problems (Expandir a busca)
vector python » vector pathogen (Expandir a busca), vector method (Expandir a busca)
coder compra » poder compra (Expandir a busca), poder comprar (Expandir a busca), compra compra (Expandir a busca)
python based » action based (Expandir a busca)
based vector » based detector (Expandir a busca), and vector (Expandir a busca), based motor (Expandir a busca)
python code » python coding (Expandir a busca), python redes (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coder compra python code problems ) OR ( python based vector python programming ))~.