Talvez deva tentar algumas variações de ortografia:
derived liver » derived lipid (Expandir a Pesquisa)
drug derived » drug delivery (Expandir a Pesquisa), lung derived (Expandir a Pesquisa), drug device (Expandir a Pesquisa)
liver thle2 » liver three (Expandir a Pesquisa)
drug nurses » drug nurse (Expandir a Pesquisa), during nurses (Expandir a Pesquisa), young nurses (Expandir a Pesquisa)
nurses cell » nurse cell (Expandir a Pesquisa), nurses well (Expandir a Pesquisa), nurses tell (Expandir a Pesquisa)
cell theory » cell therapy (Expandir a Pesquisa), legal theory (Expandir a Pesquisa)
does novel » does nodal (Expandir a Pesquisa), does nose (Expandir a Pesquisa), drives novel (Expandir a Pesquisa)
novel ther » novel ether (Expandir a Pesquisa), novel thr (Expandir a Pesquisa), novel theory (Expandir a Pesquisa)
drug does » drug doses (Expandir a Pesquisa), drugs does (Expandir a Pesquisa), drug dose (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 derived liver thle2 ) or ( drug nurses cell theory ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( drug does novel ther ) OR ((( drug derived liver thle2 ) OR ( drug nurses cell theory )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( drug does novel ther ) or ((( drug derived liver thle2 ) or ( drug nurses cell theory ))))*.