Talvez deva tentar algumas variações de ortografia:
cranial serves » cranial nerves (Expandir a Pesquisa), cranial nerve (Expandir a Pesquisa), cranial shapes (Expandir a Pesquisa)
cranial serve » cranial nerve (Expandir a Pesquisa), cranial nerves (Expandir a Pesquisa), cranial shape (Expandir a Pesquisa)
serves based » series based (Expandir a Pesquisa), server based (Expandir a Pesquisa), nerves based (Expandir a Pesquisa)
serve acnase » serve active (Expandir a Pesquisa), serve acute (Expandir a Pesquisa)
acnase goes » case goes (Expandir a Pesquisa), kinase goes (Expandir a Pesquisa)
based does » based doses (Expandir a Pesquisa), based dots (Expandir a Pesquisa), based doe (Expandir a Pesquisa)
cea serve » la serve (Expandir a Pesquisa), cea serum (Expandir a Pesquisa), a serve (Expandir a Pesquisa)
serve nn » serve new (Expandir a Pesquisa), serve one (Expandir a Pesquisa), serve _ (Expandir a Pesquisa)
nn dis » en dis (Expandir a Pesquisa)
a cea » _ cea (Expandir a Pesquisa), a coa (Expandir a Pesquisa), a ceu (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: (( a cea serve nn dis ) OR ((( _ cranial serves based does ) OR ( _ cranial serve acnase goes ))))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a cea serve nn dis ) or ((( _ cranial serves based does ) or ( _ cranial serve acnase goes ))))*.