Talvez deva tentar algumas variações de ortografia:
benign bile » benign bone (Expandir a Pesquisa)
cent serve » stent serve (Expandir a Pesquisa), best serve (Expandir a Pesquisa), pet serve (Expandir a Pesquisa)
oral merve » oral nerve (Expandir a Pesquisa), ural merve (Expandir a Pesquisa), meral merve (Expandir a Pesquisa)
merve can » nerve can (Expandir a Pesquisa)
j benign » j benigno (Expandir a Pesquisa), _ benign (Expandir a Pesquisa), a benign (Expandir a Pesquisa)
bile cat » bile cast (Expandir a Pesquisa), bile can (Expandir a Pesquisa), bile fat (Expandir a Pesquisa)
serve a » serve _ (Expandir a Pesquisa), nerve a (Expandir a Pesquisa), herve a (Expandir a Pesquisa)
can dan » can data (Expandir a Pesquisa)
cat did » coast did (Expandir a Pesquisa), what did (Expandir a Pesquisa), cat dead (Expandir a Pesquisa)
j cent » a cent (Expandir a Pesquisa), i cent (Expandir a Pesquisa), j center (Expandir a Pesquisa)
a did » a dia (Expandir a Pesquisa), _ did (Expandir a Pesquisa), i did (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( j cent serve a did ) OR ( i oral merve can dan ))) OR ( j benign bile cat did ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j cent serve a did ) OR ( i oral merve can dan ))) OR ( j benign bile cat did ))*.