Talvez deva tentar algumas variações de ortografia:
dispersion decrease » dispersion decreasing (Expandir a busca), dispersion degree (Expandir a busca)
decrease processes » disease processes (Expandir a busca), defense processes (Expandir a busca), decay processes (Expandir a busca)
air dispersion » and dispersion (Expandir a busca), _ dispersion (Expandir a busca)
python python » pythons python (Expandir a busca), piton python (Expandir a busca), pitons python (Expandir a busca)
decrease air » decrease in (Expandir a busca), decrease and (Expandir a busca), decrease hiv (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease air dispersion decrease processes ) OR ( python _ python python programming ))~.