Talvez deva tentar algumas variações de ortografia:
caso4 carlos » caso carlos (Expandir a Pesquisa), casal carlos (Expandir a Pesquisa), caro carlos (Expandir a Pesquisa)
complex tran » complex trans (Expandir a Pesquisa), complex than (Expandir a Pesquisa), complex trait (Expandir a Pesquisa)
carlos nodal » carlos vidal (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nejar (Expandir a Pesquisa)
hobbs john » hobbs jean (Expandir a Pesquisa)
yl complex » gl complex (Expandir a Pesquisa), l complex (Expandir a Pesquisa), cl complex (Expandir a Pesquisa)
nacl caso4 » nacl na2so4 (Expandir a Pesquisa)
john net » john new (Expandir a Pesquisa), john neetu (Expandir a Pesquisa), john asnet (Expandir a Pesquisa)
7.2 nacl » 7.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa), 3.5 nacl (Expandir a Pesquisa)
l hobbs » j hobbs (Expandir a Pesquisa), _ hobbs (Expandir a Pesquisa), m hobbs (Expandir a Pesquisa)
4 yl » 2 yl (Expandir a Pesquisa), 1 yl (Expandir a Pesquisa)
ngoc » ngo (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 hobbs john net ) or ((( 4 yl complex tran ngoc ) or ( 7.2 nacl caso4 carlos nodal ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l hobbs john net ) OR ((( 4 yl complex tran ngoc ) OR ( 7.2 nacl caso4 carlos nodal )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l hobbs john net ) or ((( 4 yl complex tran ngoc ) or ( 7.2 nacl caso4 carlos nodal ))))*.