Talvez deva tentar algumas variações de ortografia:
recurrence serve » recurrence curve (Expandir a Pesquisa), recurrence surge (Expandir a Pesquisa), recurrence observed (Expandir a Pesquisa)
j recurrence » _ recurrence (Expandir a Pesquisa), a recurrence (Expandir a Pesquisa), c recurrence (Expandir a Pesquisa)
cento serve » centro sebrae (Expandir a Pesquisa)
serve based » server based (Expandir a Pesquisa), nerve based (Expandir a Pesquisa), service based (Expandir a Pesquisa)
serve cyst » nerve cyst (Expandir a Pesquisa)
best serve » best served (Expandir a Pesquisa), best service (Expandir a Pesquisa), best steve (Expandir a Pesquisa)
based dti » based data (Expandir a Pesquisa), based de (Expandir a Pesquisa), based dc (Expandir a Pesquisa)
cyst dis » cyst due (Expandir a Pesquisa), cyst d (Expandir a Pesquisa)
i cento » a cento (Expandir a Pesquisa), i censo (Expandir a Pesquisa), i centeno (Expandir a Pesquisa)
serve c » serve _ (Expandir a Pesquisa), serve a (Expandir a Pesquisa), herve c (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.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( j recurrence serve cyst dis ) OR ( i cento serve based dti ))) OR ( j best serve c dis ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j recurrence serve cyst dis ) or ( i cento serve based dti ))) or ( j best serve c dis ))*.