Talvez deva tentar algumas variações de ortografia:
carbon complex » carbonyl complex (Expandir a Pesquisa), carbon complexes (Expandir a Pesquisa), carbene complex (Expandir a Pesquisa)
complex text » complete text (Expandir a Pesquisa), complex tear (Expandir a Pesquisa), complex context (Expandir a Pesquisa)
nuno carlos » nino carlos (Expandir a Pesquisa), nunes carlos (Expandir a Pesquisa), bueno carlos (Expandir a Pesquisa)
carlos jara » carlos lara (Expandir a Pesquisa), carlos carla (Expandir a Pesquisa), carlos juca (Expandir a Pesquisa)
colin new » coli new (Expandir a Pesquisa), colic new (Expandir a Pesquisa), colon new (Expandir a Pesquisa)
nacl nuno » nacl nano (Expandir a Pesquisa), nacl kno (Expandir a Pesquisa), nacl mno (Expandir a Pesquisa)
5 carbon » _ carbon (Expandir a Pesquisa), a carbon (Expandir a Pesquisa), 1 carbon (Expandir a Pesquisa)
text non » texte non (Expandir a Pesquisa), text now (Expandir a Pesquisa), text bond (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (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 _ combs colin new ) or ((( 5 carbon complex text non ) or ( 7.5 nacl nuno carlos jara ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ combs colin new ) OR ((( 5 carbon complex text non ) OR ( 7.5 nacl nuno carlos jara )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs colin new ) or ((( 5 carbon complex text non ) or ( 7.5 nacl nuno carlos jara ))))*.