Talvez deva tentar algumas variações de ortografia:
abducent nerve » abducens nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
spiral merve » spiral nerve (Expandir a Pesquisa), spiral curve (Expandir a Pesquisa), spiralis mere (Expandir a Pesquisa)
i abducent » _ abducent (Expandir a Pesquisa), i abducens (Expandir a Pesquisa), hip abducent (Expandir a Pesquisa)
system dcs » system dcus (Expandir a Pesquisa), system sdcs (Expandir a Pesquisa), system des (Expandir a Pesquisa)
best nerve » best serve (Expandir a Pesquisa), bent nerve (Expandir a Pesquisa), best served (Expandir a Pesquisa)
merve can » nerve can (Expandir a Pesquisa)
i spiral » ii spiral (Expandir a Pesquisa), _ spiral (Expandir a Pesquisa)
can dcs » can tdcs (Expandir a Pesquisa), can dce (Expandir a Pesquisa), can dags (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": "(((( i abducent nerve system dcs ) OR ( i spiral merve can dcs ))) OR ( j best nerve system dcs ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( i abducent nerve system dcs ) OR ( i spiral merve can dcs ))) OR ( j best nerve system dcs ))*.