Talvez deva tentar algumas variações de ortografia:
affect central » affects central (Expandir a Pesquisa), affect control (Expandir a Pesquisa), affecting central (Expandir a Pesquisa)
current curve » current survey (Expandir a Pesquisa), current care (Expandir a Pesquisa), current nerve (Expandir a Pesquisa)
central chick » ventral chick (Expandir a Pesquisa), central china (Expandir a Pesquisa), central chile (Expandir a Pesquisa)
chick diets » chicken diets (Expandir a Pesquisa), child diets (Expandir a Pesquisa)
j current » j currently (Expandir a Pesquisa), j curran (Expandir a Pesquisa), j currell (Expandir a Pesquisa)
curve van » curve vane (Expandir a Pesquisa), curve can (Expandir a Pesquisa), curve a (Expandir a Pesquisa)
j affect » _ affect (Expandir a Pesquisa), 1 affect (Expandir a Pesquisa), 2 affect (Expandir a Pesquisa)
van de » van der (Expandir a Pesquisa), van den (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 current curve van de ) OR ( j affect central chick diets ))~.
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j current curve van de ) or ( j affect central chick diets ))*.