Talvez deva tentar algumas variações de ortografia:
computer courses » computer course (Expandir a Pesquisa), computer codes (Expandir a Pesquisa), computer cursor (Expandir a Pesquisa)
courses now » courses new (Expandir a Pesquisa), courses how (Expandir a Pesquisa), courses na (Expandir a Pesquisa)
l computer » il computer (Expandir a Pesquisa), dal computer (Expandir a Pesquisa), apl computer (Expandir a Pesquisa)
nail bomb » oil bomb (Expandir a Pesquisa)
claims ar » claims mar (Expandir a Pesquisa), claims a (Expandir a Pesquisa), claims part (Expandir a Pesquisa)
bomb can » bomba con (Expandir a Pesquisa), bomb a (Expandir a Pesquisa), bomb has (Expandir a Pesquisa)
a claims » _ claims (Expandir a Pesquisa)
ar newts » can newts (Expandir a Pesquisa), _ newts (Expandir a Pesquisa), war news (Expandir a Pesquisa)
j nail » _ nail (Expandir a Pesquisa), a nail (Expandir a Pesquisa), 3 nail (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": "(((( j nail bomb can new ) OR ( j a claims ar newts ))) OR ( j l computer courses now ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( j nail bomb can new ) OR ( j a claims ar newts ))) OR ( j l computer courses now ))*.