Talvez deva tentar algumas variações de ortografia:
irrigation efficient » irrigation coefficient (Expandir a busca), irrigation efficiency (Expandir a busca), irrigation eficiency (Expandir a busca)
coder irrigation » modern irrigation (Expandir a busca), border irrigation (Expandir a busca), under irrigation (Expandir a busca)
efficient coding » efficient routing (Expandir a busca), efficient cement (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 efficient coding ) OR ( in python python python programming ))~.