Talvez deva tentar algumas variações de ortografia:
mrnas compared » mrna compared (Expandir a Pesquisa), rnas compared (Expandir a Pesquisa), mirna's compared (Expandir a Pesquisa)
nacl compared » acl compared (Expandir a Pesquisa), small compared (Expandir a Pesquisa), gel compared (Expandir a Pesquisa)
compared a » compare a (Expandir a Pesquisa), compare _ (Expandir a Pesquisa)
chimp can » chip can (Expandir a Pesquisa), camp can (Expandir a Pesquisa), clamp can (Expandir a Pesquisa)
can newts » can new (Expandir a Pesquisa), can newly (Expandir a Pesquisa)
j mrnas » _ mrnas (Expandir a Pesquisa), 1 mrnas (Expandir a Pesquisa), 2 mrnas (Expandir a Pesquisa)
j nacl » _ nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa), a nacl (Expandir a Pesquisa)
a netw » a neto (Expandir a Pesquisa), a neta (Expandir a Pesquisa), a netb (Expandir a Pesquisa)
_ nat » _ net (Expandir a Pesquisa), _ nad (Expandir a Pesquisa), _ nab (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 nacl compared a netw ) OR ( j mrnas compared _ new ))) OR ( _ nat chimp can newts ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nacl compared a netw ) or ( j mrnas compared _ new ))) or ( _ nat chimp can newts ))*.