Talvez deva tentar algumas variações de ortografia:
carlos sobral » carlos souza (Expandir a Pesquisa), carlos soares (Expandir a Pesquisa), carlos seabra (Expandir a Pesquisa)
complex trial » complex atrial (Expandir a Pesquisa), complex tibial (Expandir a Pesquisa), complex tropical (Expandir a Pesquisa)
trial ngos » trial nacos (Expandir a Pesquisa), trial noa (Expandir a Pesquisa), trial neo (Expandir a Pesquisa)
kcl carlos » akel carlos (Expandir a Pesquisa), gil carlos (Expandir a Pesquisa), del carlos (Expandir a Pesquisa)
0.9 nacl » 3.5 nacl (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
combs c » combs _ (Expandir a Pesquisa)
5 mre11 » _ mre11 (Expandir a Pesquisa), a mre11 (Expandir a Pesquisa), _ mre11a (Expandir a Pesquisa)
c net » c neto (Expandir a Pesquisa), _ net (Expandir a Pesquisa), u net (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 c net ) or ((( 5 mre11 complex trial ngos ) or ( 0.9 nacl kcl carlos sobral ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combs c net ) OR ((( 5 mre11 complex trial ngos ) OR ( 0.9 nacl kcl carlos sobral )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs c net ) or ((( 5 mre11 complex trial ngos ) or ( 0.9 nacl kcl carlos sobral ))))*.