Talvez deva tentar algumas variações de ortografia:
currently active » current active (Expandir a Pesquisa), concurrently active (Expandir a Pesquisa), current reactive (Expandir a Pesquisa)
j currently » _ currently (Expandir a Pesquisa), a currently (Expandir a Pesquisa), i currently (Expandir a Pesquisa)
active cas9 » active case (Expandir a Pesquisa), inactive cas9 (Expandir a Pesquisa), active cases (Expandir a Pesquisa)
serve case » nerve case (Expandir a Pesquisa), service case (Expandir a Pesquisa), reserve case (Expandir a Pesquisa)
nerve end » nerve ending (Expandir a Pesquisa)
cas9 dna » cas9 grna (Expandir a Pesquisa), cas9 d10a (Expandir a Pesquisa), cas9 a (Expandir a Pesquisa)
end dis » end aids (Expandir a Pesquisa), end does (Expandir a Pesquisa), end diet (Expandir a Pesquisa)
case d » case de (Expandir a Pesquisa), case due (Expandir a Pesquisa)
j beta » j beth (Expandir a Pesquisa)
i can » _ can (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 currently active cas9 dna ) OR ( i can serve case d ))) OR ( j beta nerve end dis ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j currently active cas9 dna ) or ( i can serve case d ))) or ( j beta nerve end dis ))*.