Talvez deva tentar algumas variações de ortografia:
coupled stones » coupled states (Expandir a Pesquisa), coupled histone (Expandir a Pesquisa), coupled strings (Expandir a Pesquisa)
metals coupled » metal coupled (Expandir a Pesquisa), metals complex (Expandir a Pesquisa), mutans coupled (Expandir a Pesquisa)
charles negrao » carlos negrao (Expandir a Pesquisa), charles nora (Expandir a Pesquisa), charles neal (Expandir a Pesquisa)
stones how » stone how (Expandir a Pesquisa), stones h (Expandir a Pesquisa)
nacl diehl » nacl diet (Expandir a Pesquisa), marcel diehl (Expandir a Pesquisa)
combs con » combs colin (Expandir a Pesquisa), combs john (Expandir a Pesquisa), combs c (Expandir a Pesquisa)
5 metals » 5 metal (Expandir a Pesquisa), 5 meters (Expandir a Pesquisa), 5 meta (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
con nd » con nb (Expandir a Pesquisa), con ni (Expandir a Pesquisa), con node (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 combs con nd ) or ((( 5 metals coupled stones how ) or ( 0.9 nacl diehl charles negrao ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combs con nd ) OR ((( 5 metals coupled stones how ) OR ( 0.9 nacl diehl charles negrao )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs con nd ) or ((( 5 metals coupled stones how ) or ( 0.9 nacl diehl charles negrao ))))*.