Talvez deva tentar algumas variações de ortografia:
research systems » research synthesis (Expandir a Pesquisa)
mental research » dental research (Expandir a Pesquisa), central research (Expandir a Pesquisa), neonatal research (Expandir a Pesquisa)
benzo nerve » benign nerve (Expandir a Pesquisa)
systems das » systems adas (Expandir a Pesquisa), systems dss (Expandir a Pesquisa), systems dds (Expandir a Pesquisa)
bent nerve » absent nerve (Expandir a Pesquisa), mental nerve (Expandir a Pesquisa), dental nerve (Expandir a Pesquisa)
nerve wat » nerve cat (Expandir a Pesquisa), nerve wrap (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j mental » j mengual (Expandir a Pesquisa), j mehta (Expandir a Pesquisa), j mena (Expandir a Pesquisa)
wat die » fast die (Expandir a Pesquisa)
i benzo » _ benzo (Expandir a Pesquisa), a benzo (Expandir a Pesquisa), 2 benzo (Expandir a Pesquisa)
nerve c » nerve cn (Expandir a Pesquisa), nerve _ (Expandir a Pesquisa), nerve a (Expandir a Pesquisa)
j bent » j benet (Expandir a Pesquisa), j bento (Expandir a Pesquisa), j bena (Expandir a Pesquisa)
c dias » c diaz (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 bent nerve wat die ) or ( i benzo nerve c dias ))) or ( j mental research systems das ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j bent nerve wat die ) OR ( i benzo nerve c dias ))) OR ( j mental research systems das )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j bent nerve wat die ) or ( i benzo nerve c dias ))) or ( j mental research systems das ))*.