Talvez deva tentar algumas variações de ortografia:
compas trial » compass trial (Expandir a Pesquisa), complex trial (Expandir a Pesquisa), comparison trial (Expandir a Pesquisa)
nacl compas » nacl compared (Expandir a Pesquisa), nacl complex (Expandir a Pesquisa)
trial nihr » trial nimh (Expandir a Pesquisa), trial nit (Expandir a Pesquisa), trial nic (Expandir a Pesquisa)
dnan clamp » dna clamp (Expandir a Pesquisa), dna clamps (Expandir a Pesquisa), can clamp (Expandir a Pesquisa)
gray cell » gray nell (Expandir a Pesquisa), gray kelly (Expandir a Pesquisa), gray cecil (Expandir a Pesquisa)
cell rna » cell renal (Expandir a Pesquisa)
rna nano » dna nano (Expandir a Pesquisa), rna nao (Expandir a Pesquisa), una nano (Expandir a Pesquisa)
j nacl » _ nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa), a nacl (Expandir a Pesquisa)
j dnan » _ dnan (Expandir a Pesquisa), j dna (Expandir a Pesquisa), a dnan (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 nacl compas trial nihr ) or ((( j dnan clamp _ noh ) or ( j gray cell rna nano ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j nacl compas trial nihr ) OR ((( j dnan clamp _ noh ) OR ( j gray cell rna nano )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j nacl compas trial nihr ) or ((( j dnan clamp _ noh ) or ( j gray cell rna nano ))))*.