Talvez deva tentar algumas variações de ortografia:
methodologies problems » methodologies problem (Expandir a busca), methodological problems (Expandir a busca), methodology problems (Expandir a busca)
class methodologies » classic methodologies (Expandir a busca), census methodologies (Expandir a busca), class methodology (Expandir a busca)
tracking python » teaching python (Expandir a busca), tracking method (Expandir a busca), tracking position (Expandir a busca)
using tracking » using stacking (Expandir a busca), using ranking (Expandir a busca), using brackish (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
coder common » modern common (Expandir a busca), under common (Expandir a busca), core common (Expandir a busca)
common class » common carp (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( coder common class methodologies problems ) OR ( using tracking python python programming ))~.