Talvez deva tentar algumas variações de ortografia:
irrigation frequency » duration frequency (Expandir a busca)
coder irrigation » modern irrigation (Expandir a busca), border irrigation (Expandir a busca), under irrigation (Expandir a busca)
frequency coding » frequency encoding (Expandir a busca), frequency coupling (Expandir a busca), frequency modeling (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (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 irrigation frequency coding ) OR ( in python python python programming ))~.