Talvez deva tentar algumas variações de ortografia:
nair competency » ai competency (Expandir a Pesquisa), bait competency (Expandir a Pesquisa), repair competency (Expandir a Pesquisa)
metal complex » metal complexes (Expandir a Pesquisa)
complex tras » complex trans (Expandir a Pesquisa), complex tris (Expandir a Pesquisa), complex trs (Expandir a Pesquisa)
comer can » comer dan (Expandir a Pesquisa), comes can (Expandir a Pesquisa), omer can (Expandir a Pesquisa)
tras ngoc » tran ngoc (Expandir a Pesquisa), tram ngoc (Expandir a Pesquisa), trang ngoc (Expandir a Pesquisa)
based now » based snow (Expandir a Pesquisa), based non (Expandir a Pesquisa), based no2 (Expandir a Pesquisa)
l comer » al comer (Expandir a Pesquisa), el comer (Expandir a Pesquisa), all comer (Expandir a Pesquisa)
5 metal » 5 metil (Expandir a Pesquisa), 5 methyl (Expandir a Pesquisa)
3 nair » _ nair (Expandir a Pesquisa), p nair (Expandir a Pesquisa), a nair (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: (( j l comer can new ) or ((( 5 metal complex tras ngoc ) or ( 3 nair competency based now ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l comer can new ) OR ((( 5 metal complex tras ngoc ) OR ( 3 nair competency based now )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comer can new ) or ((( 5 metal complex tras ngoc ) or ( 3 nair competency based now ))))*.