Talvez deva tentar algumas variações de ortografia:
discrete variable » discrete variables (Expandir a busca)
variable pattern » variable matter (Expandir a busca), variate pattern (Expandir a busca), variable water (Expandir a busca)
decrease fetal » decrease fear (Expandir a busca), decrease renal (Expandir a busca), decrease total (Expandir a busca)
fetal discrete » dental discrete (Expandir a busca), fetal distress (Expandir a busca), level discrete (Expandir a busca)
decrease or » decrease of (Expandir a busca), decrease on (Expandir a busca), decrease pro (Expandir a busca)
or decrease » of decrease (Expandir a busca), not decrease (Expandir a busca), to 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 AND decrease ) OR ( decrease fetal discrete variable pattern ))~.