Talvez deva tentar algumas variações de ortografia:
mental research » dental research (Expandir a Pesquisa), central research (Expandir a Pesquisa), neonatal research (Expandir a Pesquisa)
research system » research systems (Expandir a Pesquisa)
crespo nerve » crespo hervas (Expandir a Pesquisa), crespo servan (Expandir a Pesquisa), crespo noe (Expandir a Pesquisa)
crest nerve » treat nerve (Expandir a Pesquisa), crest derived (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
system dan » system data (Expandir a Pesquisa), system der (Expandir a Pesquisa), system de (Expandir a Pesquisa)
nerve van » nerve vas (Expandir a Pesquisa), herve van (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j crespo » g crespo (Expandir a Pesquisa), a crespo (Expandir a Pesquisa), _ crespo (Expandir a Pesquisa)
j mental » j mengual (Expandir a Pesquisa), j mena (Expandir a Pesquisa), j mehta (Expandir a Pesquisa)
van die » van de (Expandir a Pesquisa), van dijk (Expandir a Pesquisa)
i crest » i crestr (Expandir a Pesquisa), _ crest (Expandir a Pesquisa), a crest (Expandir a Pesquisa)
nerve c » nerve cn (Expandir a Pesquisa), nerve co (Expandir a Pesquisa), nerve ct (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: (((( j crespo nerve van die ) or ( i crest nerve c dis ))) or ( j mental research system dan ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j crespo nerve van die ) OR ( i crest nerve c dis ))) OR ( j mental research system dan )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j crespo nerve van die ) or ( i crest nerve c dis ))) or ( j mental research system dan ))*.