Talvez deva tentar algumas variações de ortografia:
maroc role » maroc le (Expandir a Pesquisa), maroc zone (Expandir a Pesquisa)
soil comb » soil co (Expandir a Pesquisa), soil co2 (Expandir a Pesquisa), soil core (Expandir a Pesquisa)
role can » role dans (Expandir a Pesquisa), role a (Expandir a Pesquisa)
can net » can new (Expandir a Pesquisa), dan net (Expandir a Pesquisa), can newts (Expandir a Pesquisa)
3 maroc » v maroc (Expandir a Pesquisa), au maroc (Expandir a Pesquisa), du maroc (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can new (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
l role » l rose (Expandir a Pesquisa), l robles (Expandir a Pesquisa)
can nt » can nfat (Expandir a Pesquisa)
5 soil » _ soil (Expandir a Pesquisa), a soil (Expandir a Pesquisa), 2 soil (Expandir a Pesquisa)
comb 2 » comb _ (Expandir a Pesquisa), comb m (Expandir a Pesquisa), comb n (Expandir a Pesquisa)
2 new » a new (Expandir a Pesquisa), _ new (Expandir a Pesquisa), 2 neu (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l role ((can net) OR (can nt)) ) OR ((( 5 soil comb 2 new ) OR ( 3 maroc role can now ))))~.
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j l role ((can net) OR (can nt)) ) or ((( 5 soil comb 2 new ) or ( 3 maroc role can now ))))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l role ((can net) OR (can nt)) ) or ((( 5 soil comb 2 new ) or ( 3 maroc role can now ))))*.