Talvez deva tentar algumas variações de ortografia:
nucleus roles » nucleus role (Expandir a Pesquisa), nuclear roles (Expandir a Pesquisa), nucleus release (Expandir a Pesquisa)
a nucleus » _ nucleus (Expandir a Pesquisa), a nuclease (Expandir a Pesquisa), a nuclear (Expandir a Pesquisa)
roles can » roles con (Expandir a Pesquisa), roles dans (Expandir a Pesquisa), roles a (Expandir a Pesquisa)
role can » role dans (Expandir a Pesquisa), role a (Expandir a Pesquisa)
can netw » can new (Expandir a Pesquisa), can net (Expandir a Pesquisa), can newts (Expandir a Pesquisa)
can now » can new (Expandir a Pesquisa), can non (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
l role » l rose (Expandir a Pesquisa), l robles (Expandir a Pesquisa)
crop a » crop _ (Expandir a Pesquisa)
5 oil » _ oil (Expandir a Pesquisa), 5 il (Expandir a Pesquisa), i oil (Expandir a Pesquisa)
l oil » _ oil (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 l role can netw ) or ((( ((5 oil) OR (l oil)) crop a new ) or ( a nucleus roles can now ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l role can netw ) OR ((( ((5 oil) OR (l oil)) crop a new ) OR ( a nucleus roles can now ))))*.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j l role can netw ) or ((( ((5 oil) OR (l oil)) crop a new ) or ( a nucleus roles can now ))))*".