Talvez deva tentar algumas variações de ortografia:
loss develop » locus develop (Expandir a Pesquisa), lions develop (Expandir a Pesquisa), boys develop (Expandir a Pesquisa)
develop them » develop type (Expandir a Pesquisa), develop age (Expandir a Pesquisa)
doses liver » does liver (Expandir a Pesquisa), dose liver (Expandir a Pesquisa), dose live (Expandir a Pesquisa)
naive level » five level (Expandir a Pesquisa), live level (Expandir a Pesquisa), negative level (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)
level ther » level theory (Expandir a Pesquisa), level rather (Expandir a Pesquisa), levels other (Expandir a Pesquisa)
drug loss » drug lots (Expandir a Pesquisa), drug cross (Expandir a Pesquisa), drug lists (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 loss develop them ) OR ((( drug doses liver ther ) OR ( drug naive level ther ))))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( drug loss develop them ) or ((( drug doses liver ther ) or ( drug naive level ther ))))*.