Talvez deva tentar algumas variações de ortografia:
marcia carvalho » maria carvalho (Expandir a Pesquisa), marcos carvalho (Expandir a Pesquisa), patricia carvalho (Expandir a Pesquisa)
level compared » levels compared (Expandir a Pesquisa), model compared (Expandir a Pesquisa), level comparison (Expandir a Pesquisa)
compared van » compared can (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
carvalho can » carvalho chain (Expandir a Pesquisa), carvalho cagni (Expandir a Pesquisa), carvalho caio (Expandir a Pesquisa)
j marcia » j marcial (Expandir a Pesquisa), j maria (Expandir a Pesquisa), j macia (Expandir a Pesquisa)
can ngoc » van ngoc (Expandir a Pesquisa), tran ngoc (Expandir a Pesquisa), phan ngoc (Expandir a Pesquisa)
van ngo » van ngoc (Expandir a Pesquisa)
amp can » amp camp (Expandir a Pesquisa)
15 amp » 15 am (Expandir a Pesquisa), 45 amp (Expandir a Pesquisa), 55 amp (Expandir a Pesquisa)
j 15 » j 1 (Expandir a Pesquisa), j 65 (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: (( _ level compared van ngo ) or ((( j marcia carvalho can ngoc ) or ( j 15 amp can ngoc ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( _ level compared van ngo ) OR ((( j marcia carvalho can ngoc ) OR ( j 15 amp can ngoc )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( _ level compared van ngo ) or ((( j marcia carvalho can ngoc ) or ( j 15 amp can ngoc ))))*.