Talvez deva tentar algumas variações de ortografia:
complex trad » complex trait (Expandir a Pesquisa), complex trial (Expandir a Pesquisa), complex trans (Expandir a Pesquisa)
abc company » lnc company (Expandir a Pesquisa), b company (Expandir a Pesquisa), vic company (Expandir a Pesquisa)
trad ngoc » tran ngoc (Expandir a Pesquisa), tram ngoc (Expandir a Pesquisa), trang ngoc (Expandir a Pesquisa)
company a » company _ (Expandir a Pesquisa)
mer gene » mer genes (Expandir a Pesquisa), merr gene (Expandir a Pesquisa), per gene (Expandir a Pesquisa)
gene new » genes new (Expandir a Pesquisa), gene nef (Expandir a Pesquisa), gene next (Expandir a Pesquisa)
l mer » l merr (Expandir a Pesquisa), l meer (Expandir a Pesquisa), l mera (Expandir a Pesquisa)
l fam » l fan (Expandir a Pesquisa), n fam (Expandir a Pesquisa), 5 fam (Expandir a Pesquisa)
_ fam » _ fame (Expandir a Pesquisa), _ fama (Expandir a Pesquisa), _ fat (Expandir a Pesquisa)
3 abc » _ abc (Expandir a Pesquisa), o abc (Expandir a Pesquisa), 3 alc (Expandir a Pesquisa)
a now » a new (Expandir a Pesquisa), a non (Expandir a Pesquisa), _ now (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 mer gene new ) or ((( ((l fam) OR (_ fam)) complex trad ngoc ) or ( 3 abc company a now ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l mer gene new ) OR ((( ((l fam) OR (_ fam)) complex trad ngoc ) OR ( 3 abc company a now )))).
• "As palabras AND, OR e NOT podem gerar pesquisas incorrectas; tente utilizar aspas": "(( j l mer gene new ) or ((( ((l fam) OR (_ fam)) complex trad ngoc ) or ( 3 abc company a now ))))".
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l mer gene new ) or ((( ((l fam) OR (_ fam)) complex trad ngoc ) or ( 3 abc company a now ))))*.