Talvez deva tentar algumas variações de ortografia:
ladder programming » linear programming (Expandir a busca), and programming (Expandir a busca), based programming (Expandir a busca)
decrease ladder » decreased bladder (Expandir a busca), decrease after (Expandir a busca), decrease litter (Expandir a busca)
python using » python coding (Expandir a busca), python usando (Expandir a busca), action using (Expandir a busca)
decrease il » decrease in (Expandir a busca), decrease of (Expandir a busca), decrease _ (Expandir a busca)
il decrease » l decrease (Expandir a busca), will decrease (Expandir a busca), oil decreases (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: (( decrease il decrease ladder programming ) OR ( python using in python programming ))~.