Talvez deva tentar algumas variações de ortografia:
develop them » develop type (Expandir a Pesquisa)
drives liver » driven liver (Expandir a Pesquisa)
box develop » both develop (Expandir a Pesquisa), boys develop (Expandir a Pesquisa), b develop (Expandir a Pesquisa)
drug drives » drug driven (Expandir a Pesquisa), drug derived (Expandir a Pesquisa), drugs drive (Expandir a Pesquisa)
liver ther » liver other (Expandir a Pesquisa), live rather (Expandir a Pesquisa), liver thle2 (Expandir a Pesquisa)
drug dose » drug dosage (Expandir a Pesquisa)
dose live » dose level (Expandir a Pesquisa)
live ther » live them (Expandir a Pesquisa), live rather (Expandir a Pesquisa), liver other (Expandir a Pesquisa)
drug box » drug book (Expandir a Pesquisa), drug b (Expandir a Pesquisa), drug bay (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 box develop them ) or ((( drug drives liver ther ) or ( drug dose live ther ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( drug box develop them ) OR ((( drug drives liver ther ) OR ( drug dose live ther ))))*.