Talvez deva tentar algumas variações de ortografia:
research systems » research synthesis (Expandir a Pesquisa)
renal research » regional research (Expandir a Pesquisa), orginal research (Expandir a Pesquisa), spinal research (Expandir a Pesquisa)
cancer merve » cancer nerve (Expandir a Pesquisa), cancer serves (Expandir a Pesquisa), cancer merece (Expandir a Pesquisa)
systems dss » system dss (Expandir a Pesquisa), systems do (Expandir a Pesquisa), systems de (Expandir a Pesquisa)
cent nerve » bent nerve (Expandir a Pesquisa), crest nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa)
merve van » merve can (Expandir a Pesquisa), herve van (Expandir a Pesquisa), merve a (Expandir a Pesquisa)
j cancer » j canter (Expandir a Pesquisa), j cantero (Expandir a Pesquisa), j cancela (Expandir a Pesquisa)
van dis » van die (Expandir a Pesquisa), van diest (Expandir a Pesquisa), van dijk (Expandir a Pesquisa)
nerve a » nerve _ (Expandir a Pesquisa)
j renal » j real (Expandir a Pesquisa), j renaldi (Expandir a Pesquisa), j renato (Expandir a Pesquisa)
i cent » i cento (Expandir a Pesquisa), ai cent (Expandir a Pesquisa), ii cent (Expandir a Pesquisa)
a dis » a dos (Expandir a Pesquisa), a des (Expandir a Pesquisa), a dia (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 cancer merve van dis ) or ( i cent nerve a dis ))) or ( j renal research systems dss ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j cancer merve van dis ) OR ( i cent nerve a dis ))) OR ( j renal research systems dss )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j cancer merve van dis ) or ( i cent nerve a dis ))) or ( j renal research systems dss ))*.