Talvez deva tentar algumas variações de ortografia:
decrease burden » disease burden (Expandir a busca), decrease further (Expandir a busca)
burden decrease » burden disease (Expandir a busca), urea decrease (Expandir a busca), burgers decreases (Expandir a busca)
decrease fumar » decrease fear (Expandir a busca), decrease human (Expandir a busca), decrease fungal (Expandir a busca)
fumar programa » lugar programa (Expandir a busca), cuidar programa (Expandir a busca), custar programa (Expandir a busca)
python xcode » python code (Expandir a busca), python cuda (Expandir a busca)
xcode java » codes java (Expandir a busca)

Você pode obter mais resultados ajustando o argumento de busca.

• Remover as aspas pode possibilitar buscas mais amplas: (( decrease burden decrease fumar programa ) OR ( python xcode java python programming ))~.