Talvez deva tentar algumas variações de ortografia:
complexes text » complexes tests (Expandir a Pesquisa), complex text (Expandir a Pesquisa), complexes exert (Expandir a Pesquisa)
carlos nejar » carlos negrao (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa)
comps john » copps john (Expandir a Pesquisa), combs john (Expandir a Pesquisa), camps johan (Expandir a Pesquisa)
cao carlos » caro carlos (Expandir a Pesquisa), sao carlos (Expandir a Pesquisa), cardo carlos (Expandir a Pesquisa)
text ngoc » text nlo (Expandir a Pesquisa), text non (Expandir a Pesquisa), text now (Expandir a Pesquisa)
john new » john agnew (Expandir a Pesquisa), john neil (Expandir a Pesquisa), john n (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
nacl cao » nacl co (Expandir a Pesquisa), nacl caso4 (Expandir a Pesquisa), nacl nano (Expandir a Pesquisa)
l comps » m comps (Expandir a Pesquisa)
5 metal » 5 methyl (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 comps john new ) or ((( 5 metal complexes text ngoc ) or ( 7.5 nacl cao carlos nejar ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l comps john new ) OR ((( 5 metal complexes text ngoc ) OR ( 7.5 nacl cao carlos nejar )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comps john new ) or ((( 5 metal complexes text ngoc ) or ( 7.5 nacl cao carlos nejar ))))*.