Talvez deva tentar algumas variações de ortografia:
validation programmes » vaccination programmes (Expandir a busca), vaccination programme (Expandir a busca), evaluation programme (Expandir a busca)
methods validation » method validation (Expandir a busca)
decrease processes » disease processes (Expandir a busca), defense processes (Expandir a busca), decay processes (Expandir a busca)
decrease decrease » decrease release (Expandir a busca), disease decreases (Expandir a busca), decrease sucrose (Expandir a busca)
based methods » based method (Expandir a busca), mixed methods (Expandir a busca), and methods (Expandir a busca)
python based » action based (Expandir a busca)
decrease or » decrease of (Expandir a busca), decrease on (Expandir a busca), decrease in (Expandir a busca)
or decrease » not decrease (Expandir a busca), to decrease (Expandir a busca), _ decrease (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease or decrease decrease processes ) OR ( python based methods validation programmes ))~.