Talvez deva tentar algumas variações de ortografia:
recurrent gains » recurrent gain (Expandir a Pesquisa), recurrent pains (Expandir a Pesquisa), recurrent pain (Expandir a Pesquisa)
dental nerve » mental nerve (Expandir a Pesquisa), ventral nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa)
nerve system » nervous system (Expandir a Pesquisa), reserve system (Expandir a Pesquisa), drive system (Expandir a Pesquisa)
j recurrent » _ recurrent (Expandir a Pesquisa), a recurrent (Expandir a Pesquisa), 1 recurrent (Expandir a Pesquisa)
cent nerve » bent nerve (Expandir a Pesquisa), crest nerve (Expandir a Pesquisa), central nerve (Expandir a Pesquisa)
nerve cyst » nerve case (Expandir a Pesquisa), nerve cat (Expandir a Pesquisa)
gains cyst » against cyst (Expandir a Pesquisa), gas cyst (Expandir a Pesquisa)
system dis » system dias (Expandir a Pesquisa), system di (Expandir a Pesquisa), system das (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa)
j dental » j delta (Expandir a Pesquisa), j deal (Expandir a Pesquisa), j denham (Expandir a Pesquisa)
j cent » a cent (Expandir a Pesquisa), i cent (Expandir a Pesquisa), j center (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 cent nerve cyst dis ) OR ( j recurrent gains cyst dis ))) OR ( j dental nerve system dis ))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( j cent nerve cyst dis ) OR ( j recurrent gains cyst dis ))) OR ( j dental nerve system dis ))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j cent nerve cyst dis ) OR ( j recurrent gains cyst dis ))) OR ( j dental nerve system dis ))*.