Talvez deva tentar algumas variações de ortografia:
method compared » method combined (Expandir a Pesquisa), method comparison (Expandir a Pesquisa)
compared trieu » compare trial (Expandir a Pesquisa), compared eu (Expandir a Pesquisa), compared three (Expandir a Pesquisa)
carlos nejar » carlos negrao (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos neri (Expandir a Pesquisa)
trieu ngoc » tieu ngoc (Expandir a Pesquisa), trieu ngoa (Expandir a Pesquisa), trinh ngoc (Expandir a Pesquisa)
05 method » b05 method (Expandir a Pesquisa), 15 method (Expandir a Pesquisa), 5 method (Expandir a Pesquisa)
combs c » combs _ (Expandir a Pesquisa)
null a » null _ (Expandir a Pesquisa)
j sex » _ sex (Expandir a Pesquisa), a sex (Expandir a Pesquisa), f sex (Expandir a Pesquisa)
c net » c neto (Expandir a Pesquisa), _ net (Expandir a Pesquisa), u net (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 sex combs c net ) or ((( 05 method compared trieu ngoc ) or ( a null a carlos nejar ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j sex combs c net ) OR ((( 05 method compared trieu ngoc ) OR ( a null a carlos nejar )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j sex combs c net ) or ((( 05 method compared trieu ngoc ) or ( a null a carlos nejar ))))*.