Talvez deva tentar algumas variações de ortografia:
company based » competency based (Expandir a Pesquisa)
metal complex » metal complexes (Expandir a Pesquisa)
complex care » complex case (Expandir a Pesquisa)
all romer » all comer (Expandir a Pesquisa), all comers (Expandir a Pesquisa), paul romer (Expandir a Pesquisa)
care need » care needs (Expandir a Pesquisa)
c company » _ company (Expandir a Pesquisa), a company (Expandir a Pesquisa), b company (Expandir a Pesquisa)
based no2 » based non (Expandir a Pesquisa), based noc (Expandir a Pesquisa), based nod (Expandir a Pesquisa)
5 metal » 5 metil (Expandir a Pesquisa), 5 methyl (Expandir a Pesquisa)
a news » wpa news (Expandir a Pesquisa), cua news (Expandir a Pesquisa)
dina c » dina a (Expandir a Pesquisa), dina _ (Expandir a Pesquisa)
b all » _ all (Expandir a Pesquisa), b ali (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: (( b all romer a news ) or ((( 5 metal complex care need ) or ( dina c company based no2 ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( b all romer a news ) OR ((( 5 metal complex care need ) OR ( dina c company based no2 )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( b all romer a news ) or ((( 5 metal complex care need ) or ( dina c company based no2 ))))*.