Talvez deva tentar algumas variações de ortografia:
salazar carlos » salazar camilo (Expandir a Pesquisa), salas carlos (Expandir a Pesquisa)
method complex » methods complex (Expandir a Pesquisa), method coupled (Expandir a Pesquisa), method complexity (Expandir a Pesquisa)
complex tries » complex tris (Expandir a Pesquisa), complex traits (Expandir a Pesquisa), complex series (Expandir a Pesquisa)
null salazar » neil salazar (Expandir a Pesquisa), poll salazar (Expandir a Pesquisa), manuel salazar (Expandir a Pesquisa)
carlos nada » carlos nadaf (Expandir a Pesquisa), carlos nava (Expandir a Pesquisa), carlos nara (Expandir a Pesquisa)
tries ngoc » trieu ngoc (Expandir a Pesquisa), trinh ngoc (Expandir a Pesquisa), tien ngoc (Expandir a Pesquisa)
comps non » comps con (Expandir a Pesquisa), corps non (Expandir a Pesquisa), comps los (Expandir a Pesquisa)
5 method » 5 methods (Expandir a Pesquisa), 5 methoxy (Expandir a Pesquisa), 5 methyl (Expandir a Pesquisa)
l comps » m comps (Expandir a Pesquisa)
non net » non nest (Expandir a Pesquisa), con net (Expandir a Pesquisa), non nef (Expandir a Pesquisa)
3 null » _ null (Expandir a Pesquisa), a null (Expandir a Pesquisa), 1 null (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 comps non net ) or ((( 5 method complex tries ngoc ) or ( 3 null salazar carlos nada ))))~.
• Se usar operadores Booleanos, por favor insira-os com letras MAIÚSCULAS: (( j l comps non net ) OR ((( 5 method complex tries ngoc ) OR ( 3 null salazar carlos nada )))).
• Se adicionar um carácter universal pode recuperar variações da palavra pesquisada: (( j l comps non net ) or ((( 5 method complex tries ngoc ) or ( 3 null salazar carlos nada ))))*.