Talvez deva tentar algumas variações de ortografia:
mineral complex » several complex (Expandir a Pesquisa), central complex (Expandir a Pesquisa)
complex trex » complex tree (Expandir a Pesquisa), complex tetrex (Expandir a Pesquisa), complex text (Expandir a Pesquisa)
carlos joel » carlson joel (Expandir a Pesquisa), carlos jose (Expandir a Pesquisa), carlos joao (Expandir a Pesquisa)
comps john » copps john (Expandir a Pesquisa), combs john (Expandir a Pesquisa), camps johan (Expandir a Pesquisa)
kno carlos » knopf carlos (Expandir a Pesquisa), cano carlos (Expandir a Pesquisa), nino carlos (Expandir a Pesquisa)
5 mineral » _ mineral (Expandir a Pesquisa), a mineral (Expandir a Pesquisa), 2 mineral (Expandir a Pesquisa)
trex ngoc » trieu ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), tien ngoc (Expandir a Pesquisa)
john noh » john john (Expandir a Pesquisa), john nova (Expandir a Pesquisa), john nash (Expandir a Pesquisa)
nacl kno » nacl nano (Expandir a Pesquisa), nacl en (Expandir a Pesquisa), nacl kcl (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 m comps john noh ) OR ((( 5 mineral complex trex ngoc ) OR ( 0.9 nacl kno carlos joel ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j m comps john noh ) OR ((( 5 mineral complex trex ngoc ) OR ( 0.9 nacl kno carlos joel ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j m comps john noh ) OR ((( 5 mineral complex trex ngoc ) OR ( 0.9 nacl kno carlos joel ))))*.