Talvez deva tentar algumas variações de ortografia:
direct neural » direct neuronal (Expandir a Pesquisa), direct peroral (Expandir a Pesquisa), direct oral (Expandir a Pesquisa)
mental nerve » ventral nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa), renal nerve (Expandir a Pesquisa)
crest nerve » treat nerve (Expandir a Pesquisa), crest derived (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
neural case » neutral case (Expandir a Pesquisa), neural causes (Expandir a Pesquisa), neural phase (Expandir a Pesquisa)
nerve cat » nerve can (Expandir a Pesquisa), nerve a (Expandir a Pesquisa), nerve c (Expandir a Pesquisa)
j mental » j mengual (Expandir a Pesquisa), j mena (Expandir a Pesquisa), j mehta (Expandir a Pesquisa)
j direct » j director (Expandir a Pesquisa), nhj direct (Expandir a Pesquisa)
a crest » _ crest (Expandir a Pesquisa), a creusot (Expandir a Pesquisa), a crespo (Expandir a Pesquisa)
cat dis » cat did (Expandir a Pesquisa), cat diets (Expandir a Pesquisa), cat diet (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: (( a crest nerve case due ) or ((( j mental nerve cat dis ) or ( j direct neural case due ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( a crest nerve case due ) OR ((( j mental nerve cat dis ) OR ( j direct neural case due )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( a crest nerve case due ) or ((( j mental nerve cat dis ) or ( j direct neural case due ))))*.