Talvez deva tentar algumas variações de ortografia:
levels another » reveals another (Expandir a Pesquisa), levels after (Expandir a Pesquisa), levels alter (Expandir a Pesquisa)
linear paths » linear plants (Expandir a Pesquisa), linear para (Expandir a Pesquisa), linear part (Expandir a Pesquisa)
noise levels » noise level (Expandir a Pesquisa)
does linear » does liver (Expandir a Pesquisa), does near (Expandir a Pesquisa), bayes linear (Expandir a Pesquisa)
drugs does » drugs do (Expandir a Pesquisa)
does devel » does level (Expandir a Pesquisa), does deep (Expandir a Pesquisa), does novel (Expandir a Pesquisa)
devel ther » novel ther (Expandir a Pesquisa), level theory (Expandir a Pesquisa), develop them (Expandir a Pesquisa)
drug noise » drug naive (Expandir a Pesquisa), drug nurse (Expandir a Pesquisa), during noise (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( drugs does devel ther ) OR ((( drugs does linear paths ) OR ( drug noise levels another ))))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( drugs does devel ther ) or ((( drugs does linear paths ) or ( drug noise levels another ))))*.