Talvez deva tentar algumas variações de ortografia:
research systems » research synthesis (Expandir a Pesquisa)
mena research » meta research (Expandir a Pesquisa), men research (Expandir a Pesquisa), mental research (Expandir a Pesquisa)
entner nerve » enteric nerve (Expandir a Pesquisa), after nerve (Expandir a Pesquisa), other nerve (Expandir a Pesquisa)
metal nerve » mental nerve (Expandir a Pesquisa), fetal nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
systems di » systems doi (Expandir a Pesquisa), systems do (Expandir a Pesquisa), systems de (Expandir a Pesquisa)
i metal » li metal (Expandir a Pesquisa), ii metal (Expandir a Pesquisa), i meta (Expandir a Pesquisa)
nerve c » nerve cn (Expandir a Pesquisa), nerve a (Expandir a Pesquisa), nerve can (Expandir a Pesquisa)
j mena » j medina (Expandir a Pesquisa)
c dis » c dias (Expandir a Pesquisa), c disc (Expandir a Pesquisa), c dos (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: (((( _ entner nerve _ dcs ) or ( i metal nerve c dis ))) or ( j mena research systems di ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( _ entner nerve _ dcs ) OR ( i metal nerve c dis ))) OR ( j mena research systems di )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ entner nerve _ dcs ) or ( i metal nerve c dis ))) or ( j mena research systems di ))*.