Talvez deva tentar algumas variações de ortografia:
complexity differs » complexity buffers (Expandir a Pesquisa), complexity modifiers (Expandir a Pesquisa), complexes differs (Expandir a Pesquisa)
trial complexity » material complexity (Expandir a Pesquisa), social complexity (Expandir a Pesquisa), animal complexity (Expandir a Pesquisa)
carlos navarro » carmen navarro (Expandir a Pesquisa)
caso4 carlos » caso carlos (Expandir a Pesquisa), caro carlos (Expandir a Pesquisa), casal carlos (Expandir a Pesquisa)
nacl caso4 » nacl na2so4 (Expandir a Pesquisa)
differs a » differs _ (Expandir a Pesquisa)
comps el » comps la (Expandir a Pesquisa)
7.5 nacl » 3.5 nacl (Expandir a Pesquisa), 0.9 nacl (Expandir a Pesquisa)
l comps » m comps (Expandir a Pesquisa)
5 trial » mm5 trial (Expandir a Pesquisa)
el new » del new (Expandir a Pesquisa), el neo (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 comps el new ) or ((( 5 trial complexity differs a ) or ( 7.5 nacl caso4 carlos navarro ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l comps el new ) OR ((( 5 trial complexity differs a ) OR ( 7.5 nacl caso4 carlos navarro )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comps el new ) or ((( 5 trial complexity differs a ) or ( 7.5 nacl caso4 carlos navarro ))))*.