Talvez deva tentar algumas variações de ortografia:
burden decreases » burgers decreases (Expandir a busca), brain decreases (Expandir a busca), urea decreases (Expandir a busca)
decrease burden » disease burden (Expandir a busca), decrease further (Expandir a busca)
decreases and » decreases in (Expandir a busca), decreases _ (Expandir a busca)
decrease to » decreased to (Expandir a busca), decrease toc (Expandir a busca), decrease the (Expandir a busca)
and objects » and object (Expandir a busca), and subjects (Expandir a busca), and objectives (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease _ decrease to decrease ) OR ( decrease burden decreases and objects ))~.