Talvez deva tentar algumas variações de ortografia:
metals complex » metal complex (Expandir a Pesquisa), metals complexes (Expandir a Pesquisa), metals coupled (Expandir a Pesquisa)
complex tail » complex trait (Expandir a Pesquisa), complex task (Expandir a Pesquisa), complex thin (Expandir a Pesquisa)
carlos rojek » carlos nojek (Expandir a Pesquisa), carlos rojas (Expandir a Pesquisa), carlos roger (Expandir a Pesquisa)
knot carlos » knopf carlos (Expandir a Pesquisa), enout carlos (Expandir a Pesquisa), knecht carlos (Expandir a Pesquisa)
combs con » combs colin (Expandir a Pesquisa), combs john (Expandir a Pesquisa), combs c (Expandir a Pesquisa)
tail ngoc » tai ngoc (Expandir a Pesquisa), tail non (Expandir a Pesquisa)
nacl knot » nacl kno (Expandir a Pesquisa), nacl mno (Expandir a Pesquisa), nacl npt (Expandir a Pesquisa)
5 metals » 5 metal (Expandir a Pesquisa), 5 metil (Expandir a Pesquisa), 5 meters (Expandir a Pesquisa)
con nee » con net (Expandir a Pesquisa), con noe (Expandir a Pesquisa), con note (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 con nee ) or ((( 5 metals complex tail ngoc ) or ( 0.9 nacl knot carlos rojek ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j _ combs con nee ) OR ((( 5 metals complex tail ngoc ) OR ( 0.9 nacl knot carlos rojek )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ combs con nee ) or ((( 5 metals complex tail ngoc ) or ( 0.9 nacl knot carlos rojek ))))*.