Talvez deva tentar algumas variações de ortografia:
nail complex » snail complex (Expandir a Pesquisa), tail complex (Expandir a Pesquisa), snail1 complex (Expandir a Pesquisa)
complex can » complex case (Expandir a Pesquisa), complex care (Expandir a Pesquisa), complex cell (Expandir a Pesquisa)
nail compr » nail compared (Expandir a Pesquisa), nail company (Expandir a Pesquisa)
compr can » comp can (Expandir a Pesquisa), computer can (Expandir a Pesquisa), compared can (Expandir a Pesquisa)
nat clamp » dnan clamp (Expandir a Pesquisa), a clamp (Expandir a Pesquisa), dna clamp (Expandir a Pesquisa)
clamp ar » clamp a (Expandir a Pesquisa), clamp pcr (Expandir a Pesquisa), clamp _ (Expandir a Pesquisa)
ar near » far near (Expandir a Pesquisa), sar near (Expandir a Pesquisa), mr near (Expandir a Pesquisa)
3 nail » _ nail (Expandir a Pesquisa), 3 nacl (Expandir a Pesquisa)
j nat » j nart (Expandir a Pesquisa), _ nat (Expandir a Pesquisa), e nat (Expandir a Pesquisa)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

Pode obter mais resultados ajustando a pesquisa.

• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(((( a nail compr can new ) OR ( 3 nail complex can new ))) OR ( j nat clamp ar near ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( a nail compr can new ) OR ( 3 nail complex can new ))) OR ( j nat clamp ar near ))*.