Talvez deva tentar algumas variações de ortografia:
pcr compared » pcr coupled (Expandir a Pesquisa), pcr combined (Expandir a Pesquisa)
compared can » compared case (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared law (Expandir a Pesquisa)
can newts » can newly (Expandir a Pesquisa)
chimp can » chip can (Expandir a Pesquisa), camp can (Expandir a Pesquisa), clamp can (Expandir a Pesquisa)
nay camp » day camp (Expandir a Pesquisa), day camps (Expandir a Pesquisa), gray camp (Expandir a Pesquisa)
ca newts » _ newts (Expandir a Pesquisa), a newt (Expandir a Pesquisa), ca net (Expandir a Pesquisa)
camp ca » camp a (Expandir a Pesquisa), camp c (Expandir a Pesquisa), camp camp (Expandir a Pesquisa)
j nare » _ nare (Expandir a Pesquisa), j narr (Expandir a Pesquisa), j naresh (Expandir a Pesquisa)
l pcr » al pcr (Expandir a Pesquisa), sl pcr (Expandir a Pesquisa), _ pcr (Expandir a Pesquisa)
j nay » j nagy (Expandir a Pesquisa), _ nay (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: (((( l pcr compared can newts ) or ( j nay camp ca newts ))) or ( j nare chimp can new ))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (((( l pcr compared can newts ) OR ( j nay camp ca newts ))) OR ( j nare chimp can new ))*.