Talvez deva tentar algumas variações de ortografia:
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 ther » novel ether (Expandir a Pesquisa), novel thr (Expandir a Pesquisa), novel theory (Expandir a Pesquisa)
drug doses » drug disease (Expandir a Pesquisa)
liver ther » liver other (Expandir a Pesquisa), live rather (Expandir a Pesquisa), liver thle2 (Expandir a Pesquisa)
dose level » dose levels (Expandir a Pesquisa), noise level (Expandir a Pesquisa), dose live (Expandir a Pesquisa)
level race » level rise (Expandir a Pesquisa), level racial (Expandir a Pesquisa)
drug does » drugs does (Expandir a Pesquisa), drug de (Expandir a Pesquisa), drug diet (Expandir a Pesquisa)
drug dose » drug dosage (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Performing a fuzzy search may retrieve terms with similar spellings: (( drug does novel ther ) or ((( drug doses liver ther ) or ( drug dose level race ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( drug does novel ther ) OR ((( drug doses liver ther ) OR ( drug dose level race ))))*.