Talvez deva tentar algumas variações de ortografia:
decrease burden » disease burden (Expandir a busca), decrease further (Expandir a busca)
decrease lipid » increases lipid (Expandir a busca), increased lipid (Expandir a busca)
lipid decrease » rapid decrease (Expandir a busca), ligand decrease (Expandir a busca), limb decrease (Expandir a busca)
burden objects » buried objects (Expandir a busca), wooden objects (Expandir a busca), golden objects (Expandir a busca)
decrease not » decrease of (Expandir a busca), decrease akt (Expandir a busca), decrease at (Expandir a busca)
not decrease » to decrease (Expandir a busca), not increase (Expandir a busca), and decrease (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Caso esteja tentando utilizar os operadores booleanos, deve escrevê-los em Letras MAIÚSCULAS: (( decrease lipid decrease OR decrease ) OR ( decrease NOT decrease burden objects ))~.
• As palavras AND, OR e NOT pode ocasionar problemas na busca; tente utilizar as aspas: "(( decrease lipid decrease OR decrease ) OR ( decrease not decrease burden objects ))~".
• Adicionar um caractere curinga pode recuperar variações da palavra buscada: (( decrease lipid decrease OR decrease ) OR ( decrease not decrease burden objects ))*.