Talvez deva tentar algumas variações de ortografia:
methods complex » methods coupled (Expandir a Pesquisa), methods compared (Expandir a Pesquisa), methods computer (Expandir a Pesquisa)
complex trinh » complex thin (Expandir a Pesquisa), complex trans (Expandir a Pesquisa), complex trial (Expandir a Pesquisa)
knopf carlos » prof carlos (Expandir a Pesquisa)
carlos nora » carlos mora (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa), carlos noa (Expandir a Pesquisa)
trinh ngoc » trinh quoc (Expandir a Pesquisa), dinh ngoc (Expandir a Pesquisa), minh ngoc (Expandir a Pesquisa)
nacl knopf » nacl kno (Expandir a Pesquisa)
5 methods » 5 methoxy (Expandir a Pesquisa)
3.5 nacl » 0.9 nacl (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
l combs » e combs (Expandir a Pesquisa), _ combs (Expandir a Pesquisa), l comps (Expandir a Pesquisa)
colin » colon (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 combs colin a ) or ((( 5 methods complex trinh ngoc ) or ( 3.5 nacl knopf carlos nora ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l combs colin a ) OR ((( 5 methods complex trinh ngoc ) OR ( 3.5 nacl knopf carlos nora )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l combs colin a ) or ((( 5 methods complex trinh ngoc ) or ( 3.5 nacl knopf carlos nora ))))*.