Talvez deva tentar algumas variações de ortografia:
metal complex » metal complexes (Expandir a Pesquisa)
complex tried » complex trial (Expandir a Pesquisa), complex third (Expandir a Pesquisa), complex tree (Expandir a Pesquisa)
hobbs john » hobbs jean (Expandir a Pesquisa)
john neetu » john reetu (Expandir a Pesquisa), john neetha (Expandir a Pesquisa), john neena (Expandir a Pesquisa)
tried ngoc » trieu ngoc (Expandir a Pesquisa), trinh ngoc (Expandir a Pesquisa), thien ngoc (Expandir a Pesquisa)
carlos noa » carlos nodal (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
l carlos » gil carlos (Expandir a Pesquisa)
5 metal » 5 metil (Expandir a Pesquisa), 5 methyl (Expandir a Pesquisa)
nacl l » nacl _ (Expandir a Pesquisa), nacl y (Expandir a Pesquisa), nacl a (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 _ hobbs john neetu ) or ((( 5 metal complex tried ngoc ) or ( 7.5 nacl l carlos noa ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ hobbs john neetu ) OR ((( 5 metal complex tried ngoc ) OR ( 7.5 nacl l carlos noa )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ hobbs john neetu ) or ((( 5 metal complex tried ngoc ) or ( 7.5 nacl l carlos noa ))))*.