Talvez deva tentar algumas variações de ortografia:
family competence » family conference (Expandir a Pesquisa), family conferences (Expandir a Pesquisa), safety competence (Expandir a Pesquisa)
competence can » incompetence can (Expandir a Pesquisa), competence a (Expandir a Pesquisa), competence cpc (Expandir a Pesquisa)
compared jaw » compared law (Expandir a Pesquisa), compared a (Expandir a Pesquisa), compared can (Expandir a Pesquisa)
ml compared » gel compared (Expandir a Pesquisa), model compared (Expandir a Pesquisa), tool compared (Expandir a Pesquisa)
10 family » 30 family (Expandir a Pesquisa), 200 family (Expandir a Pesquisa)
comp can » camp can (Expandir a Pesquisa), chimp can (Expandir a Pesquisa), clamp can (Expandir a Pesquisa)
jaw new » law new (Expandir a Pesquisa)
can non » dan non (Expandir a Pesquisa), than non (Expandir a Pesquisa)
l comp » l comps (Expandir a Pesquisa), l como (Expandir a Pesquisa), l comper (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": "(((( _ ml compared jaw new ) OR ( j l comp can non ))) OR ( 10 family competence can new ))~".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (((( _ ml compared jaw new ) OR ( j l comp can non ))) OR ( 10 family competence can new ))*.