Talvez deva tentar algumas variações de ortografia:
complex tried » complex trial (Expandir a Pesquisa), complex tree (Expandir a Pesquisa), complex trex (Expandir a Pesquisa)
metal complex » metal complexes (Expandir a Pesquisa)
coombes john » coombs john (Expandir a Pesquisa), coombes jason (Expandir a Pesquisa), forbes john (Expandir a Pesquisa)
cano carlos » luciano carlos (Expandir a Pesquisa), casiano carlos (Expandir a Pesquisa), bacino carlos (Expandir a Pesquisa)
john neetu » john reetu (Expandir a Pesquisa), john neena (Expandir a Pesquisa), jain neetu (Expandir a Pesquisa)
tried ngoc » trieu ngoc (Expandir a Pesquisa), trinh ngoc (Expandir a Pesquisa), tien ngoc (Expandir a Pesquisa)
carlos noa » carlos nodal (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa)
nacl cano » nacl nano (Expandir a Pesquisa), nacl caso4 (Expandir a Pesquisa), nacl cacl (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (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 _ coombes john neetu ) OR ((( 5 metal complex tried ngoc ) OR ( 3.5 nacl cano carlos noa ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j _ coombes john neetu ) OR ((( 5 metal complex tried ngoc ) OR ( 3.5 nacl cano carlos noa ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j _ coombes john neetu ) OR ((( 5 metal complex tried ngoc ) OR ( 3.5 nacl cano carlos noa ))))*.