Perhaps you should try some spelling variations:
method complex » methods complex (Expand Search), method coupled (Expand Search), method complexity (Expand Search)
caminho novo » caminho do (Expand Search), caminho dos (Expand Search), campo novo (Expand Search)
complex tail » complex task (Expand Search), complex thin (Expand Search), complex tap (Expand Search)
del caminho » del camino (Expand Search), de caminho (Expand Search), des caminho (Expand Search)
nano carlos » cano carlos (Expand Search), nino carlos (Expand Search), nuno carlos (Expand Search)
carlos nada » carlos nadaf (Expand Search), carlos nava (Expand Search), carlos nara (Expand Search)
novo next » novel next (Expand Search), novo texto (Expand Search), novo neil (Expand Search)
nacl nano » nacl kno (Expand Search), nacl nabr (Expand Search), nacl naoh (Expand Search)
5 method » 5 methods (Expand Search), 5 methoxy (Expand Search), 5 methyl (Expand Search)
tail non » trail non (Expand Search), tailed non (Expand Search), tail bond (Expand Search)
0.9 nacl » 3.5 nacl (Expand Search)
m del » y del (Expand Search)

You can also try:

• Europeana
• Digital Public Library of America
• CORE

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (( m del caminho novo next ) or ((( 5 method complex tail non ) or ( 0.9 nacl nano carlos nada ))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (( m del caminho novo next ) OR ((( 5 method complex tail non ) OR ( 0.9 nacl nano carlos nada )))).
• Adding a wildcard symbol may retrieve word variants: (( m del caminho novo next ) or ((( 5 method complex tail non ) or ( 0.9 nacl nano carlos nada ))))*.