Talvez deva tentar algumas variações de ortografia:
their problems » the problems (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
coder string » cordel string (Expandir a busca), closed string (Expandir a busca), modelo string (Expandir a busca)
string their » string theory (Expandir a busca), setting their (Expandir a busca), during their (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 string their problems ) OR ( in python python python programming ))~.