Talvez deva tentar algumas variações de ortografia:
comparative amino » comparative animal (Expandir a Pesquisa), comparative action (Expandir a Pesquisa), comparative anti (Expandir a Pesquisa)
play comparative » plant comparative (Expandir a Pesquisa), place comparative (Expandir a Pesquisa), plaza comparative (Expandir a Pesquisa)
ages compared » age compared (Expandir a Pesquisa), aged compared (Expandir a Pesquisa), images compared (Expandir a Pesquisa)
compared a » compared _ (Expandir a Pesquisa)
nat2 camp » ca2 camp (Expandir a Pesquisa), nat2 com (Expandir a Pesquisa)
amino net » amino n (Expandir a Pesquisa)
camp can » clamp can (Expandir a Pesquisa), camp ca (Expandir a Pesquisa), amp can (Expandir a Pesquisa)
can now » can non (Expandir a Pesquisa), can new (Expandir a Pesquisa), can ngoc (Expandir a Pesquisa)
j play » _ play (Expandir a Pesquisa), a play (Expandir a Pesquisa), 2 play (Expandir a Pesquisa)
j ages » _ ages (Expandir a Pesquisa), 4 ages (Expandir a Pesquisa), 6 ages (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: (( 2 nat2 camp can now ) or ((( j play comparative amino net ) or ( j ages compared a new ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( 2 nat2 camp can now ) OR ((( j play comparative amino net ) OR ( j ages compared a new )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( 2 nat2 camp can now ) or ((( j play comparative amino net ) or ( j ages compared a new ))))*.