Talvez deva tentar algumas variações de ortografia:
levels rather » cells rather (Expandir a Pesquisa)
noise levels » noise level (Expandir a Pesquisa)
during noise » during noisy (Expandir a Pesquisa), using noise (Expandir a Pesquisa), during noble (Expandir a Pesquisa)
doses liver » does liver (Expandir a Pesquisa), dose liver (Expandir a Pesquisa), dose live (Expandir a Pesquisa)
does novel » does nose (Expandir a Pesquisa)
novel them » novel ther (Expandir a Pesquisa), novel thermo (Expandir a Pesquisa), novel three (Expandir a Pesquisa)
drug doses » drug dose (Expandir a Pesquisa), drug disease (Expandir a Pesquisa)
liver ther » liver other (Expandir a Pesquisa), live rather (Expandir a Pesquisa), liver thle2 (Expandir a Pesquisa)
drug does » drugs does (Expandir a Pesquisa), drug dose (Expandir a Pesquisa), drug de (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: (( drug does novel them ) OR ((( drug doses liver ther ) OR ( during noise levels rather ))))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( drug does novel them ) or ((( drug doses liver ther ) or ( during noise levels rather ))))*.