Talvez deva tentar algumas variações de ortografia:
recurrent cord » recurrent copy (Expandir a Pesquisa), recurrent co (Expandir a Pesquisa), recurrent cot (Expandir a Pesquisa)
best service » rest service (Expandir a Pesquisa), debt service (Expandir a Pesquisa), et service (Expandir a Pesquisa)
service cyst » service cost (Expandir a Pesquisa), service costs (Expandir a Pesquisa), service case (Expandir a Pesquisa)
a recurrent » _ recurrent (Expandir a Pesquisa)
genes serve » genes server (Expandir a Pesquisa), genes serves (Expandir a Pesquisa), genes series (Expandir a Pesquisa)
serve cyst » nerve cyst (Expandir a Pesquisa)
cord cyst » cord case (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa)
ii best » i best (Expandir a Pesquisa), ai best (Expandir a Pesquisa), di best (Expandir a Pesquisa)
j genes » j gene (Expandir a Pesquisa), j genesca (Expandir a Pesquisa), vdj genes (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: (((( a recurrent cord cyst dis ) or ( ii best service cyst dis ))) or ( j genes serve cyst dis ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( a recurrent cord cyst dis ) OR ( ii best service cyst dis ))) OR ( j genes serve cyst dis )).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a recurrent cord cyst dis ) or ( ii best service cyst dis ))) or ( j genes serve cyst dis ))*.